Company lists · Data refreshed September 2026

Top 24 Deep sea exploration companies based in France

Name: Deep sea exploration companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 64 companies tracked

RevenueBase identified 64 deep sea exploration companies headquartered in France as of September 2026 and tracks 812 professional contacts across them, including 157 with verified work emails. Marseille is the largest hub.

This list covers deep sea exploration 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 19, 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 19, 2026 86% judged on-target in blind review

64Companies

812Contacts tracked

157Verified emails

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The 24 largest deep sea exploration companies based in France

Ranked by team size

Top 24 of 64 deep sea exploration companies based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to deep sea exploration 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	Alseamar	Indirect evidence	Rousset, FranceHQ checked Sep 19, 2026	201-500	139 contacts →
	Indirect evidence “Founded in 2015, ALSEAMAR, a subsidiary of the ALCEN Group, develops, designs, operates and maintains high-performance underwater solutions that meet the requirements of…” Source: RevenueBase Database · checked Sep 19, 2026
2	Tara Ocean Fondation	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	11-50	82 contacts →
	Indirect evidence “The Fondation Tara Océan, first recognized public interest foundation in France dedicated to the world's oceans, is leading a scientific revolution: the Foundation has developed…” Source: RevenueBase Database · checked Sep 19, 2026
3	Watertracks	Indirect evidence	Perols, FranceHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “Ingénierie et services subaquatiques robotisés.” Source: RevenueBase Database · checked Sep 19, 2026
4	Seaber	Indirect evidence	Lorient, FranceHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “SEABER is an innovative company that designs and manufactures highly reliable micro-AUVs, for research and commercial applications.” Source: RevenueBase Database · checked Sep 19, 2026
5	SATIF	Indirect evidence	Dagneux, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Les travaux subaquatiques sont le cœur d’intervention des scaphandriers de Satif.” Source: RevenueBase Database · checked Sep 19, 2026
6	COSMA	Indirect evidence	Nice, FranceHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “By industrializing the inventory & monitoring of benthic ecosystems, Cosma strives to contribute to the preservation of ocean biodiversity and security of our subsea…” Source: RevenueBase Database · checked Sep 19, 2026
7	Abyssa SAS	Indirect evidence	Anglet, FranceHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence “ABYSSA’s work involves exploring the ocean depths (up to using Autonomous Underwater Vehicles (AUVs) to carry out high-resolution seabed mapping.” Source: RevenueBase Database · checked Sep 19, 2026
8	Delair Marine	Indirect evidence	Marseille, FranceHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Delair Marine is the company behind Seasam, the world's first compact autonomous underwater drone made for professional applications.” Source: RevenueBase Database · checked Sep 19, 2026
9	CERES	Indirect evidence	Montfarville, FranceHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence “Spécialisés dans l'acquisition et le traitement de données géophysiques marines, la plongée, la recherche et le renflouement d'épaves, la société CERES répond aux besoins de ses…” Source: RevenueBase Database · checked Sep 19, 2026
10	Arkeocean	Indirect evidence	Aspremont, FranceHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Arkeocean is a French deeptech company building autonomous underwater drone systems for maritime defense, subsea surveillance, industrial inspection, and ocean monitoring.” Source: RevenueBase Database · checked Sep 19, 2026
11	Marine Tech	Indirect evidence	Six Fours Les Plages, FranceHQ checked Sep 19, 2026	1-10	17 contacts →
	Indirect 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 19, 2026
12	Neotek	Partial evidence	Caudan, FranceHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Neotek est une société française détenue à 100% par Sea Vorian.” Source: RevenueBase Database · checked Sep 19, 2026
13	The Cousteau Society	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	14 contacts →
	Partial evidence “The Cousteau Society has been exploring the seas since 1975, establishing protected areas for endangered species, advocating for the silent world which cannot advocate for itself…” Source: RevenueBase Database · checked Sep 19, 2026
14	Setec Invivo	Indirect evidence	La Forêt-fouesnant, FranceHQ checked Sep 19, 2026	51-200	13 contacts →
	Indirect evidence “setec invivo intervient dès l’acquisition des données en mer, ce qui confère autonomie et efficacité.” Source: RevenueBase Database · checked Sep 19, 2026
15	Actimar	Indirect evidence	Brest, FranceHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Depuis plus de 20 ans, Actimar apporte son expertise au service de la mer.” Source: RevenueBase Database · checked Sep 19, 2026
16	Kappa Offshore Solutions	Indirect evidence	St-Nazaire, FranceHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “Kappa Offshore Solutions is a marine engineering company specialized in offshore seismic data acquisition.” Source: RevenueBase Database · checked Sep 19, 2026
17	SEA Vorian	Partial evidence	Caudan, FranceHQ checked Sep 19, 2026	51-200	7 contacts →
	Partial evidence “Le groupe SEA VORIAN est dédié à la conception, la réalisation, l’intégration et à la mise en œuvre d’équipements de hautes technologies dans les environnements marins.” Source: RevenueBase Database · checked Sep 19, 2026
18	Bathy Drone Solutions	Indirect evidence	Gauchin-légal, FranceHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “BATHY DRONE SOLUTIONS est une entreprise qui vous propose de la bathymétrie, des prélèvements et de l'imagerie par drone aquatique et subaquatique.” Source: RevenueBase Database · checked Sep 19, 2026
19	Bluearth Production	Indirect evidence	La Ciotat, FranceHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Nous sommes spécialisés dans le tournage sous-marin depuis plus de 20 ans.” Source: RevenueBase Database · checked Sep 19, 2026
20	Mission Seaorbiter	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “SeaOrbiter, a unique international oceanic station.” Source: RevenueBase Database · checked Sep 19, 2026
21	KEO Robotics	Partial evidence	Vannes, FranceHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Keo Robotics is a start-up from Vannes that develops and manufactures innovative solutions at affordable prices for the exploration of the seabed.” Source: RevenueBase Database · checked Sep 19, 2026
22	ORQUE	Indirect evidence	Sous L’eau, FranceHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Chez Orque, on imagine, crée et développe la plongée de demain.” Source: RevenueBase Database · checked Sep 19, 2026
23	Bourbon Offshore Gaia	Indirect evidence	Marseille, FranceHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	Astrolabe Expeditions	Indirect evidence	FranceHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Astrolabe Expeditions a pour objectif de rendre accessibles les expéditions scientifiques océaniques.” Source: RevenueBase Database · checked Sep 19, 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: deep sea exploration 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 deep sea exploration companies.
Partial evidence: Its own public description names part of deep sea exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name deep sea exploration 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 24 of 64 deep sea exploration companies based in France

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Deep sea exploration companies based in France at a glance

As of Sep 19, 2026

19.3%Verified-email coverage

12.7Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · Marseille

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 64 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 deep sea exploration 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 “deep sea exploration 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 deep sea exploration 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 deep sea exploration 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, 157 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 19, 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 deep sea exploration 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 deep sea exploration companies are there based in France?

RevenueBase identified 64 deep sea exploration 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?

Alseamar, headquartered in France, tops this list with the largest team on record.

Which city has the most deep sea exploration companies?

Marseille leads with 4 headquartered companies, followed by Paris (4) and La Ciotat (3).

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 157 verified decision-maker contacts tracked across these 64 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 19, 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.