The presence of collagen contributes more than 70 as well as 80 percent of dry weight in jellyfish mesoglea. In contrast to mammalian collagen which is predominantly composed of types I, II and III, jellyfish collagen is enriched with type I and II collagen-like protein and is unique in its structure in that it increases the flexibility of the jellyfish and also decreases the chances of realizing an immune response (Ahmed et al., 2021) (Table 2). The triple-helical structure facilitates the material to work properly by endowing strength and heating-resistance by glycine, proline and hydroxyproline that are in large extent. The chemical composition of jellyfish collagen shows that it is composed of dissimilar amino acids when compared to earth collagen and could be of beneficial application to biomedical and environment science.

Table 2 highlights clear biochemical differences among jellyfish species that influence their potential use in bioplastics. Species such as Nemopilema nomurai exhibit the highest collagen contents (65–75%), as reported by Geng et al. (2024), while Rhopilema esculentum similarly shows 60–70% collagen (Pivnenko et al., 2022), making both ideal for applications requiring strong, structurally stable bioplastic films. Aurelia aurita contains slightly lower collagen levels (55–65%) (Balikci et al., 2024), yet retains balanced polysaccharide and glycoprotein fractions that enhance film-forming ability. Historical reports such as Sipos and Ackman (1968) for Cyanea capillata and Malej et al. (1993) for Pelagia noctiluca provide consistent protein-rich compositions suitable for biopolymer processing. Species including Cassiopea andromeda (De Rinaldis et al., 2021) and Chrysaora quinquecirrha (Xia et al., 2021) offer moderate collagen (50–63%) but higher glycoprotein and polysaccharide levels that contribute to elasticity, hydration and flexibility, beneficial for softer or composite bioplastic designs. Phyllorhiza punctata also provides a balanced biochemical profile (Rodrigues et al., 2025), enabling its use in blended biomaterials. Overall, Table 2 indicates that species rich in collagen (e.g., N. nomurai, R. esculentum) are best suited for mechanically strong bioplastics, whereas species with higher polysaccharides and glycoproteins offer better viscoelasticity, water-binding capacity, and functional adaptability, making them advantageous for tailored marine bioplastic formulations.

Other proteins are fibrillar, glycoproteins and various enzymes in the mesoglea. It is due to these proteins that the gelatinous matrix is made elastic, viscoelastic and tough. Carbohydrate moieties in glycoproteins modify the potential of them to interact with the water molecules and aid in the creation of materials that consist of other biomolecules, providing biomaterials with the necessary strength and functionality (Su et al., 2021). Connectivity between collagen fibers in jellyfish provides bioplastics produced of them with a greater possibility to remain stable and biodegraded upon a specified period of time (Ballesteros et al., 2025). Jelly farms contain proteoglycans and mucopolysaccharides that assist the body in retaining water and helping its bodies. There are possibilities when making changes to biopolymers in collagen based biomaterials which may alter the material and its muscle like properties e.g. tensile strength and/or elasticity and breakdown of such materials. There are many theories that Jellyfish-based materials can heal themselves out which is aided by enzymes contained in their matrix so as we can utilize their self-healing properties and create adaptive and self-healing plastic.

Other than collagen and proteins, jellyfish would also be usable to form other biopolymers which may be used as bioplastics. The water retention and stiffness is also due to Glycosaminoglycans (GAGs), which are sulfated polysaccharides found in the jellyfish mesoglea. Polymersomes resemble chondroitin sulfate and hyaluronic acid, therefore, possessing such important characteristics as water-absorption capability, body-safety and biodegradability. Jellyfish GAGs extraction can be resourceful in the formation of bioplastics, which are bendable and can easily degrade in the ocean water (Bhende et al., 2023). Jellyfish mucus is a complex mixture of proteins, lipids and carbohydrates that exhibit antimicrobial and antioxidant activities. Bio plastics can be more effective as packaging and defend the marine coatings because the jellyfish mucus or the active substances kept the growth of the microbes, the duration of the product in fouling and increment of the storage life. They are quite useful in a scenario where something is going to be in the sea water a long time. The other jellyfish side product, collagen gelatin, is a biopolymer that was recognized to form robust films (Farooq et al., 2024). Jellyfish gelatin is mechanically good and has the ability to form thin, tough and clear films which can be used as biodegradable wrappings. These composites can possess enhanced strength and barriers because it can be combined with other bio-polymers very effectively. The use of various biopolymers made of jellyfish creates numerous possibilities to develop new bioplastics that will save the environment (Steinberger et al., 2019).

Another significant factor that leads to bioplastic production is how well the jellyfish biomolecules are extracted and purified (Figure 1; Table 2). The collagen is typically extracted by dissolving its bonds using diluted acetic acid followed by the further degradation of the collagen using a collection of enzymes referred to as proteases. In this step the enzyme fragments some areas of the fibril, without modifying the triple helix required to perform its functions. The yield of collagen as well as its qualities depends much on time of extraction, temperature, pH and enzyme quantity. Apart from acid dissolution and enzymatic digestion, there are other ways to extract. They include alkaline hydrolysis, ultrasound-assisted extraction, microwave-assisted extraction, and sub/supercritical extraction. Each approach offers specific benefits and trade-offs. An example of this is ultrasound- and microwave-assisted techniques that enhance extraction and diminish solvent use, they might create risks for collagen denaturation. The use of pepsin or collagenase for enzymatic hydrolysis provides better quality but is expensive. Alkaline pretreatment could effectively eliminate non-collagenous proteins but produces chemical waste. In order to understand which protocol is the most sustainable and efficient, the parameters must be evaluated. Additional purification removing any remaining non-collagenous proteins and enzymes, and salts is achieved via methods of salt precipitation (usually using NaCl), dialysis and filtration. Traditionally, due to the use of ultrafiltration and chromatography, the purity of collagen is increased, and the various types of collagen can be separated with respect to each other (Ahmed et al., 2020). SDS-PAGE, Fourier-transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) are the essential tests to characterize the molecules, to determine their integrity and fitness to undergo the subsequent steps of processing. Enzymatic digestion is used to degrade proteins in glycosaminoglycans after extraction in water, then subsequent precipitation using organic solvents e.g. ethanol, or cetylpyridinium chloride. Such methods as ultrasound-assisted extraction and membrane filtration have been verified in order to simplify extraction process, reducing the amount of used solvents and scaling up the project (Cauduro et al., 2025). These technologies aim at reducing impact on the nature and making their usage at scale as accessible as possible. But it is hard to standardize the protocol across a very broad range of jelly populace, and to handle the variation season to season in biomass, and ensure a habitually reproducible batch. The solutions to these issues become very essential to convert jellyfish biomolecules of experimental purposes into commercial applications.

To make any bioplastic successful in real application, it should be strong and ductile due to the fact that this is the measure of how easily the material can withstand damage due to applying external loads and remain intact as its shape varies. Collagen, which is jellyfish bioplastics, relies primarily on the protein, which has a triple-helix structure and offers superior tensile force and elasticity. The mechanical behavior of collagen-based bioplastics depends, to a large extent, on the methods of extraction, their level of crosslinking and post-processing treatments. Empirical results have indicated that jellyfish collagen films and composites had tensile strength capabilities of about 30 to 70-megapascals (MPa), competitive with ground-based collagens. As an example, polymers/composites built out of N. nomurai collagen achieved tensile strengths of more than 60 MPa, following improved enzymatic extraction and chemical crosslinking, representing similar values to certain commercial synthetic biopolymers (Balikci et al., 2024). This tensile strength and significant elongation at break (up to 30%), suggests a good balance between strength and flexibility, which are much required in flexible packaging, biodegradable nets, and marine coatings.

There are very large numbers of collage based medical devices relying on glutaraldehyde, genipin and carbodiimides to bond collagen molecules and reinforce the device against mechanical and water degradation. At that, with excessively strong crosslinking, the product obtained may be inflexible and probably crack under the pressure. Consequently, the crosslinking should be well-balanced in order to obtain the optimum balance of strength and flexibility. The addition of plasticizers such as small polymers such as glycerol, sorbitol or polyethylene glycol has also been effective in breaking the hydrogen bonding between the collagen chains, thereby enhancing chain mobility in the polymer and enhancing flexibility and extensibility (Vieira et al., 2011). Composites of jellyfish collagen and substances such as chitosan, alginate or gelatin can be mixed, providing a stronger mechanic of bioplastics, increased toughness and better inherence to substances. These composites have greater water vapor permeability and retention of elasticity than collagen films, which increases their applicability (Coppola et al., 2020). Jellyfish bioplastics can handle a change in form and will unload energy when required, because they are viscoelastic, which is significant to use in the sea, where they would absorb variance in loading. The rheological studies results show that jellyfish collagen bioplastics are more processable, but do not disintegrate, as they stiffen. Studies have shown that jellyfish-based films have tensile strengths of around 30–70 MPa. These original studies, such as (Balikci et al., 2024) have some key differences in extraction conditions and crosslinker type. In the future studies should quantify elasticity and water-vapor permeability to maximize the applications in flexible packaging and marine coatings.

Bioplastics are considered thermally stable when they do not lose their functions or deteriorate at different temperatures during each stage of their use. Jellyfish collagen undergoes denaturation at temperatures as low as 30°C to 50°C, compared to mammalian collagen. Differences in protein building blocks, their crosslinks and special types of sugar molecules are the reasons why. High processing temperatures aren’t recommended because collagen’s heat stability is low, yet solvent methods at low temperatures are preferred and commonly apply to the manufacture of collagen films and scaffolds (Zhang et al., 2020). Thermogravimetric analysis (TGA) of jellyfish collagen bioplastics reveals a multi-phase thermal degradation profile. Moisture loss happens as the material warms from 50°C to 120°C and then degradation of the polypeptide chains occurs above 200°C. Differential scanning calorimetry (DSC) studies typically identify endothermic peaks representing collagen denaturation and thermal decomposition. These thermal transitions guide selection of processing temperatures to avoid compromising the triple-helical structure, which is critical for mechanical performance and biodegradability (Li et al., 2025; Yorke et al., 2025). Microstructure, thermal properties and pH, ion concentration and drying speed all influence the bioplastics produced. If drying occurs slowly and under control, films become denser and more uniform with better mechanical and barrier properties. By contrast, rapid drying may result in brittle and porous films. Furthermore, plasticizers reduce intermolecular hydrogen bonding, lowering glass transition temperatures and improving thermal flexibility at the expense of some thermal resistance (Lian et al., 2019; Han et al., 2024). Mixing jellyfish collagen with polysaccharides or synthetic biodegradable polymers makes the material more heat tolerant and easier to process. For example, composite materials with alginate or polylactic acid have demonstrated improved heat resistance, enabling applications requiring sterilization or higher temperature exposure. The best results are obtained when these blends are optimized to both resist harsh industry processes and still degrade in the environment.

Bioplastics designed for medical or marine uses must be both safe and biocompatible. Jellyfish collagen has proven to be biocompatible, with few studies reporting either immunogenicity or cytotoxicity. The molecular uniqueness of jellyfish collagen, including differences in amino acid sequences and reduced antigenic determinants compared to mammalian collagen, underlies its favorable biological profile (Addad et al., 2011; Rigogliuso et al., 2023). Genipin and other natural crosslinkers or the enzymatic route, allow biocompatible materials to be made rather than using the toxic by-products of synthetic agents such as glutaraldehyde. Moreover, the degradation products of jellyfish collagen bioplastics are typically non-toxic amino acids and peptides, mitigating ecological and health risks during material breakdown in marine or biological environments (Baksi et al., 2025).

When materials are used in marine environments, biofouling occurs which can have a major impact on a material’s longevity. Incorporation of bioactive compounds derived from jellyfish mucus, known for antimicrobial and antioxidant properties, can confer inherent resistance to biofouling, reducing the need for synthetic biocides harmful to marine ecosystems (Jayaprakashvel et al., 2020; Qiu et al., 2024). This property ensures bioplastic devices are safe to use and last longer than other bioplastics. It is important to test all aspects of ecotoxicology to confirm that neither bioplastics nor their by-products harm marine organisms at every level of the food chain. At this early stage, safety indicators look good, yet additional studies are needed to check how well jellyfish-based bioplastics are suited for large-scale environmental use. When we look at all the important physicochemical features, it’s clear that jellyfish-based bioplastics are excellent alternatives to traditional plastics. Research should continue to help optimize these properties and ensure they are safe for the environment, so they can be used for fighting marine plastic pollution and developing marine biotechnology.

Biodegradation of polymers in oceans happens as different factors such as chemical, physical and biological, play their respective roles sequentially and together. Initially, abiotic degradation occurs through photodegradation by ultraviolet (UV) radiation, mechanical abrasion from wave action, tidal forces, and sediment friction, as well as hydrolysis facilitated by seawater chemistry. These processes induce polymer chain scission, surface erosion, and increased porosity, which expose new reactive sites and enhance microbial colonization (Bond et al., 2018; Wu et al., 2022). Because jellyfish bioplastics are made of protein, enzymes can digest them efficiently. Marine bacteria and fungi secrete collagenases, proteases, and peptidases that cleave peptide bonds within the collagen matrix, converting high-molecular-weight proteins into peptides, amino acids, and ultimately mineralizing these into carbon dioxide, water, and microbial biomass (Bhende et al., 2023). This enzymatic hydrolysis typically proceeds via extracellular digestion, with microbes forming biofilms on the polymer surface to concentrate enzymatic activity. Moreover, biofilms not only facilitate degradation by creating a localized microenvironment but also promote syntrophic microbial interactions, enhancing biodegradation pathways (Al-Madboly et al., 2024). The rates of degradation are controlled by how salty the water is, how much oxygen is dissolved and the presence of needed nutrients for microbes. Compared to synthetic plastics, which lack enzymatic recognition sites and are chemically inert, jellyfish bioplastics are more readily assimilated by native marine microbiota (Mohanan et al., 2020).

The plastics degradation rate and number of plastics exist are tightly linked to their effect on the environment. Conventional plastics like polyethylene (PE), polypropylene (PP), and polystyrene (PS) possess stable carbon-carbon bonds that are resistant to hydrolysis and enzymatic breakdown, leading to accumulation and fragmentation into persistent microplastics (Cai et al., 2023). Such persistence contributes to long-term ecological and health hazards including bioaccumulation of toxic substances and physical harm to marine organisms. Jellyfish-derived bioplastics are known to degrade rapidly and converts fully into mineral form in the presence of water. Controlled laboratory studies have reported mass losses exceeding 60–80% within 90 days for collagen-based films in simulated seawater conditions (Coppola et al., 2020). The quick decay of these materials brings down the risk of microplastics fragmentation and the related negative impacts. But the rate of degradation varies significantly with the way materials are manufactured. High crosslink density or incorporation of non-biodegradable additives can reduce enzymatic accessibility and slow degradation (Yao et al., 2025). Modifying the moisture and crystalline properties of polymers increases the chance of microbial growth and increases the rates of enzymatic reactions. Real-world degradation may be further influenced by biofouling, sediment burial, and physical abrasion, which can either facilitate fragmentation or shield polymers from microbial attack (Zhang et al., 2024). To confirm laboratory results and measure environmental stability, long-term in situ tests are necessary because marine influence and ecology can be different in various regions.

Bioplastics made from jellyfish are broken down in marine ecosystems in ways that depend strongly on environmental factors. Enzymes and microbes function better at certain temperatures and in tropical and temperate parts of the ocean, the warm temperatures lead to rapid degradation. Conversely, colder polar and deep-sea environments exhibit slower microbial activity, prolonging material persistence (Marques, 2020). Microbial communities and the stability of enzymes change with changes in salinity. Both halophilic and halotolerant microbes in salty domains have evolved to produce enzymes that break down marine biopolymers. Fluctuations in salinity within estuaries or coastal zones can therefore modulate biodegradation efficiency (Rezaei et al., 2025). Changes in how polymers swell, resulting from osmotic stress, may affect enzyme availability. Microbial community make-up, numbers and diversity matter. Collagenolytic bacteria such as Vibrio, Pseudoalteromonas, and Alteromonas, along with marine fungi, have been documented to degrade jellyfish biomolecules effectively (Rotter et al., 2024). Because microbes group together in biofilms, these areas are better for teamwork in breaking down pollutants. Nutrient availability, oxygen concentration, and competition also regulate microbial activity and succession on bioplastic surfaces (Oliva-Albert et al., 2025). Ultraviolet light, the chemical environment, motions of water and things like organic matter further affect how biological degradation occurs. UV can initiate photodegradation, fragmenting polymers and increasing microbial susceptibility, although excessive UV may inhibit microbial communities (Wang et al., 2015). Although both of these sediments can be mineralized, aerobic ones usually do this faster because they lack the anoxic conditions needed for other biochemical cycles. The breakdown of jellyfish bioplastics is controlled by a range of variables and depends on where and how it happens. Creating polymers that suit the marine environment in each region improves how fast they degrade and how safe they are for marine life.

It is important that packaging for seafood and aquaculture maintains freshness, provides mechanical security and is environmentally safe. Conventional plastic packaging materials, such as polyethylene films and expanded polystyrene containers, contribute significantly to marine litter when discarded improperly (Gallo et al., 2018). Jellyfish-derived bioplastics offer an eco-friendly alternative due to their biodegradability in marine environments and ability to form transparent, flexible films with good barrier properties (Rotter et al., 2024). Collagen-based films derived from jellyfish exhibit favorable oxygen and moisture barrier characteristics, critical for inhibiting oxidation and microbial spoilage of seafood products during transportation and storage (Farooq et al., 2024). Moreover, their inherent biocompatibility and non-toxicity make them safe for direct food contact applications. These bioplastic films can be engineered with additives such as natural antioxidants and antimicrobials extracted from jellyfish mucus to extend shelf life and reduce food waste (Periyasamy et al., 2025). In the aquaculture industry, the use of biodegradable materials for packaging and transportation helps keep polluting substances at bay, even if accidental release happens. The compostability and marine degradability of jellyfish bioplastics ensure that lost or discarded packaging materials minimize long-term environmental accumulation (Datta et al., 2024).

Fishing gear such as nets, lines, traps, and cages fabricated from synthetic plastics are major contributors to marine debris and ghost fishing phenomena, causing ecological damage and economic losses (Kozioł et al., 2022). Jellyfish-derived bioplastics provide a renewable and biodegradable material platform for manufacturing fishing gear that degrades after a defined service life, thereby mitigating these environmental impacts (Rotter et al., 2021). The mechanical strength and flexibility of collagen-based composites derived from jellyfish are sufficient to meet the demands of fishing nets and lines, while biodegradation ensures that lost gear does not persist indefinitely (Harussani et al., 2023). Crosslinking and polymer blending allow tuning of degradation rates to balance operational durability with environmental safety. Because biodegradable nets naturally disintegrate, they reduce ghost fishing which helps stop more accidental deaths of marine life.

Biofouling and the difficulty of dragging in boat nets can be reduced when conventional gear is coated with jellyfish-based biodegradable polymers. The addition of bioactive compounds inherent in jellyfish mucus may enhance anti-fouling properties, extending gear lifespan and reducing maintenance costs (Esparza-Espinoza et al., 2025). Adoption of jellyfish-based biodegradable gear aligns with emerging regulatory frameworks mandating reduction of marine plastic pollution and supports sustainable fisheries management (Edelist et al., 2021).

The increasing deployment of sensor networks and monitoring devices in marine environments necessitates materials that minimize ecological footprint and withstand harsh conditions (Glaviano et al., 2022). Because jellyfish bioplastics are biodegradable and tough, they can be used as a novel covering or shell for sensors and gadgets in the ocean. Bioplastics can be engineered to provide protective coatings or housings that degrade harmlessly after device end-of-life, preventing accumulation of electronic waste in the oceans (Nomadolo and Muniyasamy, 2024). Additionally, collagen-based films possess optical transparency and flexibility desirable for sensor interfaces or wearable devices for marine animals (Farooq et al., 2024). Incorporation of jellyfish-derived bioactive molecules into sensor materials may enable self-cleaning surfaces resistant to biofouling, a major challenge impairing sensor performance. Research into integrating conductive nanomaterials with jellyfish bioplastics aims to develop biodegradable electronic components capable of sensing temperature, salinity, or chemical pollutants, thereby advancing marine environmental monitoring technologies (Pesterau et al., 2025).

Marine aquaculture often requires precise delivery of nutrients, antibiotics, or pesticides to maintain healthy stock and optimize yields. Using traditional chemical delivery can add to pollution and encourage harmful substances to build up in the environment. Jellyfish-derived bioplastics can serve as biodegradable carriers for controlled release of agrochemicals, enabling targeted, sustained delivery in marine settings (Rotter et al., 2021).

Collagen and associated polysaccharides have properties that make it easier to put active ingredients into polymer or hydrogel materials. These matrices gradually degrade in seawater, releasing encapsulated agents in a controlled manner responsive to environmental triggers such as temperature or pH changes (She et al., 2025). By using such delivery systems, farmers can lower the use of chemicals, avoid problems with off-target effects and cut down on leftover pollution in marine sediments. Moreover, the bioactive components of jellyfish biomaterials may synergistically enhance antimicrobial efficacy or modulate immune responses in cultured organisms (Rigogliuso et al., 2023). Research into formulating jellyfish-based micro- and nano-carriers for aquaculture is ongoing, representing a promising direction toward sustainable marine farming practices (Duarte et al., 2022).

Life Cycle Assessment (LCA) is a comprehensive methodology used to evaluate the environmental impacts associated with all stages of a product’s life. When studying jellyfish-derived bioplastics, LCA considers obtaining the jellyfish, processing them, making the bioplastics, distributing them, how they are used and how they will be disposed of or break down. Early LCA studies indicate that jellyfish bioplastics have a comparatively lower carbon footprint than petroleum-based plastics due to their renewable source and potential for low-energy extraction techniques (Olatunji, 2020). Harvesting jellyfish biomass often involves minimal input energy, especially when utilizing natural blooms that otherwise contribute to ecosystem imbalance (Graham et al., 2014). Extraction methods leveraging enzymatic processes and green solvents further reduce environmental burdens compared to chemical-intensive protocols. Even so, the amount of energy used in the final steps—purification, drying and turning the solution into a film can change the overall sustainability. Use of renewable energy sources and process optimization are therefore critical to enhancing environmental performance.

Materials used at the end of their products’ lives are expected to biodegrade and turn into minerals, so less plastic waste remains in landfill. Compared to conventional plastics, which often persist in environments for centuries, jellyfish-derived bioplastics decompose into non-toxic products under marine conditions, significantly reducing environmental persistence (Coppola et al., 2020). Nonetheless, comprehensive LCAs integrating marine degradation pathways and ecological effects remain limited, underscoring the need for further research to quantify real-world sustainability benefits.

Being biodegradable, coming from nature and fitting marine needs, jellyfish bioplastics can play a key role in combating marine plastic pollution. Their rapid enzymatic breakdown in seawater decreases the accumulation of persistent plastic debris and microplastics, which are major threats to marine biodiversity and food security (Datta et al., 2024). By substituting conventional plastics in applications such as packaging, fishing gear, and aquaculture equipment, jellyfish bioplastics can directly lower the input of non-degradable materials into marine environments (Pagnotta, 2025). Moreover, utilization of jellyfish biomass harvested from blooms can transform an ecological challenge into a resource, promoting circular economy principles and ecosystem restoration (D’Ambra and Merquiol, 2022). Integration of jellyfish bioplastics into regulatory frameworks and industry standards aimed at marine pollution reduction can accelerate their adoption and contribute to global plastic waste management strategies. Getting people aware and encouraging policies will be key to shifting toward biodegradables from marine sources. Problems in making ideas work on a large scale and turning them into profitable businesses. Even with the benefits for the environment, several things stop jellyfish-based bioplastics from being produced on a large scale. Variability in jellyfish species composition, seasonal biomass availability, and geographic distribution complicate consistent raw material (Bastian et al., 2014). Efficient harvesting and processing technologies must be developed to enable cost-effective biomass collection without disrupting marine ecosystems (Sagarminaga et al., 2024).

In order to achieve the highest yield, purity and performance from plant materials, extraction and purification must be optimized to use as little energy and solvent as possible. Scaling enzymatic extraction and maintaining quality control pose technical hurdles that impact product consistency. Economic factors such as production costs, market demand, and competition with established petrochemical plastics influence commercial feasibility. Investment in research, infrastructure, and supply chain development is necessary to reduce costs and achieve economies of scale. Furthermore, regulatory uncertainties and lack of standardized certification for marine biodegradable plastics hinder market penetration. Robust ecotoxicological and lifecycle data are required to meet regulatory requirements and consumer expectations (Fletcher et al., 2021). Combining work from various fields, innovation and positive policies can fully exploit the green benefits of jellyfish bioplastics in ocean protection.