Name

FlexSea

Website

https://flex-sea.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

FlexSea is a London-based blue biotech startup developing biodegradable, seaweed-derived bioplastic for sustainable packaging applications, targeting companies seeking single-use plastic alternatives. Founded in 2020, it remains pre-commercial.

Ownership category

akta.pro rank

Product category

Biodegradable Packaging Materials

NAICS

Resin, Synthetic Rubber, and Artificial and Synthetic Fibers and Filaments Manufacturing (3252)

SIC

Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821)

akta.pro primary industry

Bio-based & Biodegradable Polymer Resin Manufacturing (PLA, PHA, PBS, starch blends) (IMANAAAG)

akta.pro secondary industries

Compostable & Bio-Based Packaging (PLA/PHA, Starch Blends, Cellulose Films) (IMALAMAB), Bio-based & Biodegradable Polymer Resin Manufacturing (PLA, PHA, PBS, PBAT) (IMANANAA)

Keywords

• Biodegradable bioplastic
• Seaweed-based packaging
• Sustainable packaging materials
• Blue biotechnology
• Single-use plastic alternatives

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Operations

Core offering

FlexSea develops and produces biodegradable bioplastic material derived from seaweed as a renewable alternative to petroleum-based single-use plastics. The company supplies this bioplastic for use in packaging applications by manufacturers, converters, and consumer brands. The company is currently in pre-commercial development phase.

Differentiator

Problem solved

Functional benefit

Products and services

• Seaweed-derived biodegradable bioplastic

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators2 records

Direct peers

• Notpla: London-based startup developing seaweed-based packaging films and sachets to replace single-use plastic. Closest direct peer to FlexSea — same feedstock (seaweed), same target use case (single-use plastic replacement in packaging), and same UK regulatory environment. Differentiated by form factor (Notpla focuses on films/sachets/hydration pods) and an earlier commercialization stage.
• Sway: California-based startup producing flexible packaging films from seaweed. Directly comparable to FlexSea on both feedstock (seaweed) and end-product (flexible packaging), making it the most head-to-head competitor for seaweed-based film applications.
• Loliware: US-based startup making single-use straws, cutlery, and packaging from seaweed-based bioplastic. Direct peer in the seaweed-bioplastics-for-packaging category; differentiated by finished-goods focus (straws/cutlery) versus FlexSea's upstream resin positioning.
• Tipa: Israel-based company developing compostable, bio-based flexible packaging films for food and fashion applications. Comparable target use case (single-use flexible packaging replacement) and comparable regulatory positioning under EU SUP rules, though Tipa's feedstock is starch-based rather than seaweed.
• Mango Materials: US-based producer of PHA bioplastic from waste biogas. Comparable as a next-generation bioplastic resin manufacturer targeting packaging applications, with a differentiated feedstock (methane from waste) and similar pre-commercial-to-early-commercial stage.

Broad incumbents

• NatureWorks: World's largest PLA bioplastic resin producer (Ingeo brand), majority-owned by PTT Global Chemical. Broad incumbent in bio-based packaging resins; competes with FlexSea for the same CPG/foodservice packaging customers and has nameplate capacity, certifications, and customer relationships that FlexSea lacks.
• Danimer Scientific: Public US company (NYSE: DNMR) producing Nodax PHA bioplastic for packaging, foodservice, and coatings. Established bioplastic resin manufacturer competing for the same single-use plastic replacement applications; provides a public-market read on bioplastic demand and pricing dynamics.
• TotalEnergies Corbion: Joint venture between TotalEnergies and Corbion producing Luminy PLA resins from sugarcane. Major scaled PLA producer with European production footprint, directly competing with FlexSea for EU packaging customers and reinforcing the PLA incumbent baseline FlexSea must beat on cost and performance.
• Novamont: Italian bioplastics producer (Mater-Bi starch-based resins and films). Established European bio-based packaging incumbent with strong customer relationships in foodservice and retail; sets the cost/performance benchmark FlexSea must match or beat in EU packaging.

Emerging players

• Algix: Algae-based biomaterials company producing flexible foam and bioplastic blends for consumer goods and packaging. Emerging peer using a different aquatic feedstock (algae) but with a comparable bio-based materials-for-packaging value proposition and similar early-commercialization maturity.

Market position

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds4 records

Investors11 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about FlexSea