Company lists · Data refreshed September 2026

Top 25 Marine biotech companies based in France

Name: Marine biotech companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 63 companies tracked

RevenueBase identified 63 marine biotech companies headquartered in France as of September 2026 and tracks 970 professional contacts across them, including 327 with verified work emails. Marseille is the largest hub.

This list covers marine biotech companies headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

63Companies

970Contacts tracked

327Verified emails

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The 25 largest marine biotech companies based in France

Ranked by team size

Top 25 of 63 marine biotech companies based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine biotech companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Greentech	Partial evidence	Saint Beauzire, FranceHQ checked Sep 17, 2026	51-200	258 contacts →
	Partial evidence “Our Credo We are biotech pioneers, we are scientists, we are explorers.” Source: RevenueBase Database · checked Sep 17, 2026
2	Fermentalg	Partial evidence	Libourne, FranceHQ checked Sep 17, 2026	51-200	84 contacts →
	Partial evidence “About Fermentalg: Based in Libourne (France), Fermentalg is an industrial biotechnology company, specialized in the production of oil rich in fatty acids (omega-3), proteins and…” Source: RevenueBase Database · checked Sep 17, 2026
3	Société Atlantique DE Mariculture Satmar	Indirect evidence	Gatteville-le-phare, FranceHQ checked Sep 17, 2026	51-200	61 contacts →
	Indirect evidence “Bienvenue à la SATMAR!” Source: RevenueBase Database · checked Sep 17, 2026
4	Microphyt	Indirect evidence	Baillargues, FranceHQ checked Sep 17, 2026	51-200	57 contacts →
	Indirect evidence “Created in 2007 near Montpellier-France, Microphyt develops and markets unique microalgae-based bioactives using breakthrough technologies and processes.” Source: RevenueBase Database · checked Sep 17, 2026
5	Algaia - JRS Group	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	51-200	51 contacts →
	Indirect evidence “Algaia, part of the JRS Rettenmaier group, is a company developing, producing and commercializing Natural Extracts, mostly made out of seaweed.” Source: RevenueBase Database · checked Sep 17, 2026
6	Fermes Marines DU Soleil	Partial evidence	La Brée-les-bains, FranceHQ checked Sep 17, 2026	51-200	43 contacts →
	Partial evidence “Les écloseries des FERMES MARINE DU SOLEIL (FMDS), filiale du groupe AQUALANDE, pionnières dans l’activité d’écloseries marines ont été créées il y a 40 ans et sont depuis des…” Source: RevenueBase Database · checked Sep 17, 2026
7	Copalis Industrie	Indirect evidence	Le Portel, FranceHQ checked Sep 17, 2026	51-200	33 contacts →
	Indirect evidence “COPALIS INDUSTRIE is a fishery company based out of 220 RUE DU PETIT PORT, LE PORTEL, France.” Source: RevenueBase Database · checked Sep 17, 2026
8	Algosource	Partial evidence	Guérande, FranceHQ checked Sep 17, 2026	11-50	22 contacts →
	Partial evidence “AlgoSource is the French pioneer in producing high-value bioactive molecules from microalgae biomass and natural marine resources, dedicated to nutraceuticals and preventive…” Source: RevenueBase Database · checked Sep 17, 2026
9	Seaneo	Partial evidence	Mont De Marsan, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “Depuis 2006, SEANEO est une société de conseil et de services en environnement littoral et marin, en aquaculture et pêche (gestion des zones côtières, Aires Marines Protégées…” Source: RevenueBase Database · checked Sep 17, 2026
10	Codif Technologie Naturelle	Indirect evidence	Saint-malo, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “At the forefront of innovation, we never stop to question ourselves.” Source: RevenueBase Database · checked Sep 17, 2026
11	Scogal	Partial evidence	Le Portel, FranceHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “Nous sommes la coopérative d'intérêt maritime de Boulogne-sur-Mer, leader mondial sur le marché des hydrolysats.” Source: RevenueBase Database · checked Sep 17, 2026
12	Laboratoire Csbs-Odemer	Partial evidence	Mauguio, FranceHQ checked Sep 17, 2026	1-10	18 contacts →
	Partial evidence “Le Laboratoire CSBS-ODEMER, 2 histoires en 1, plus de 28 ans d’expériences communes dans le secteur du plasma marin.” Source: RevenueBase Database · checked Sep 17, 2026
13	Marine Tech	Partial evidence	Six Fours Les Plages, FranceHQ checked Sep 17, 2026	1-10	17 contacts →
	Partial evidence “Plus de 20 années d'expérience dans les opérations maritimes - Créée par les fondateurs de Nymphea Environnement, la société MARINE TECH propose les activités suivantes-…” Source: RevenueBase Database · checked Sep 17, 2026
14	Abyss Ingredients	Partial evidence	Caudan, FranceHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “Abyss Ingredients was founded in 2004 on the initiative of Brittany's fishing and fish processing professionnals who aimed at valuate marine by-products.” Source: RevenueBase Database · checked Sep 17, 2026
15	Seaboost	Partial evidence	Montpellier, FranceHQ checked Sep 17, 2026	1-10	15 contacts →
	Partial evidence “Seaboost is a french company specialized in the design, development and deployment of innovative solutions for the restoration and the enhancement of marine biodiversity.” Source: RevenueBase Database · checked Sep 17, 2026
16	Mega Biopharma	Strong evidence	Crosne, FranceHQ checked Sep 17, 2026	11-50	15 contacts →
	Strong evidence “Acteur français de la biotechnologie marine, pionnier dans le développement de Bionacre®, un biomatériau naturel extrait de la nacre.” Source: RevenueBase Database · checked Sep 17, 2026
17	Seanova	Partial evidence	Pleuven, FranceHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “By conscientiously promoting marine biodiversity, Seanova wants to minimize the impact of humans on the marine environment and offer innovative and effective solutions derived…” Source: RevenueBase Database · checked Sep 17, 2026
18	Alegina	Indirect evidence	Le Poiré-sur-vie, FranceHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “Alegina :"born for the sea".” Source: RevenueBase Database · checked Sep 17, 2026
19	Scea France Haliotis	Indirect evidence	Plouguerneau, FranceHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “SCEA FRANCE HALIOTIS is an aquaculture farming company based out of Kerazan, Plouguerneau, Bretagne, France.” Source: RevenueBase Database · checked Sep 17, 2026
20	Polymaris Biotechnology	Partial evidence	Brest, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Polymaris Biotechnology est une société de biotechnologie bleue, créée en 2008 par Anthony Courtois et Bertrand Thollas.” Source: RevenueBase Database · checked Sep 17, 2026
21	Immunrise Biocontrol France	Indirect evidence	Cestas, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence “IMMUNRISE BIOCONTROL FRANCE is specialised in research and development of biocontrol microalgae solutions.” Source: RevenueBase Database · checked Sep 17, 2026
22	Ocean Kiss	Indirect evidence	Eysines, FranceHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “Notre mission?” Source: RevenueBase Database · checked Sep 17, 2026
23	Biothalassol Laboratoire	Indirect evidence	Benouville, FranceHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Un savoir-faire de plus de 50 ans d’expérience Créé en 1969, notre laboratoire a acquis au fil des ans, une expérience et un savoir faire qui nous permet de proposer aux…” Source: RevenueBase Database · checked Sep 17, 2026
24	Marine Akwa	Indirect evidence	St Jacut De La Mer, FranceHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	Odontella	Partial evidence	Bordeaux, FranceHQ checked Sep 17, 2026	1-10	1 contacts →
	Partial evidence “La société a déposé des brevets relatifs à l'utilisation d’Odontella, première microalgue marine au monde autorisée à la consommation humaine.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: marine biotech companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names marine biotech companies.
Partial evidence: Its own public description names part of marine biotech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine biotech companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 63 marine biotech companies based in France

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Marine biotech companies based in France at a glance

As of Sep 17, 2026

33.7%Verified-email coverage

15.4Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Marseille

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 63 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among marine biotech companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “marine biotech companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names marine biotech companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among marine biotech companies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 327 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names marine biotech companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many marine biotech companies are there based in France?

RevenueBase identified 63 marine biotech companies headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Greentech, headquartered in Saint Beauzire, tops this list with the largest team on record.

Which city has the most marine biotech companies?

Marseille leads with 3 headquartered companies, followed by Montpellier (3) and Aix-En-Provence (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 327 verified decision-maker contacts tracked across these 63 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.