Company lists · Data refreshed September 2026
Top 25 Marine conservation groups worldwide
RevenueBase identified 1,140 marine conservation groups worldwide as of September 2026 and tracks 16,920 professional contacts across them, including 4,405 with verified work emails. The United States is the largest market and London the largest hub.
This list covers marine conservation groups worldwide, 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 20, 2026. Country and city lists for marine conservation groups follow the table.
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.
The 25 largest marine conservation groups worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,663 contacts → | ||||
Indirect evidence “WCS stands for wildlife and wild places.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 738 contacts → | ||||
Partial evidence “The mission of the nonprofit Monterey Bay Aquarium is to inspire conservation of the ocean.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 453 contacts → | ||||
Partial evidence “Founded in 1955, Mote Marine Laboratory & Aquarium is an independent, nonprofit 501(c)3 research organization based in Sarasota, Fla, with additional field stations in eastern…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 438 contacts → | ||||
Strong evidence “The New England Aquarium is a catalyst for global change through public engagement, commitment to marine animal conservation, leadership in education, innovative scientific…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 398 contacts → | ||||
Partial evidence “Oceana is the largest international advocacy organization dedicated solely to ocean conservation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 272 contacts → | ||||
Indirect evidence “The Seattle Aquarium is a nonprofit Aquarium committed to Earth’s one ocean.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 257 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 256 contacts → | ||||
Partial evidence “OUR MISSION: We believe in preserving our environment while inspiring the human spirit through leadership in the rescue, rehabilitation, and release of marine life; environmental…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 255 contacts → | ||||
Indirect evidence “We believe the power to restore our oceans lives in the coastal communities bearing witness to the planetary crises.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 240 contacts → | ||||
Partial evidence “Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 227 contacts → | ||||
Indirect evidence “Our ocean is truly awesome-but it is not invincible.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 191 contacts → | ||||
Indirect evidence “Pacific Whale Foundation is a non-profit organization founded in 1980 to save whales from extinction.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 183 contacts → | ||||
Strong evidence “Established in 1977, Sea Shepherd Conservation Society (SSCS) is an international non-profit, marine wildlife conservation organization.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 165 contacts → | ||||
Indirect evidence “A promover o conhecimento e a conservação do oceano desde 1998” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 156 contacts → | ||||
Strong evidence “The Marine Conservation Society is the UK's leading marine charity working towards a cleaner, better protected and healthier ocean, for everyone Today, our ocean is in poor health…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 145 contacts → | ||||
Partial evidence “Ocean Wise is a global non-for-profit conservation organization inspiring action to conserve our oceans.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 128 contacts → | ||||
Partial evidence “British Divers Marine Life Rescue is a charity dedicated to frontline response for marine mammals around the UK using a network of over trained volunteer Marine Mammal Medics.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 125 contacts → | ||||
Strong evidence “First established in 1977, Sea Shepherd is an international non-profit, marine wildlife conservation organisation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 103 contacts → | ||||
Strong evidence “Surfers Against Sewage is a national marine conservation and campaigning charity that inspires, unites and empowers communities to take action to protect the ocean and our blue…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 90 contacts → | ||||
Indirect evidence “SAAMBR is an environmental services company based out of South Africa.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 88 contacts → | ||||
Partial evidence “Known as Blue Marine, this UK registered charity was set up in 2010 by some of the team behind the award-winning documentary film ‘The End of the Line’.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 88 contacts → | ||||
Partial evidence “The National Marine Mammal Foundation is a 501(c)3 nonprofit organization with a mission to improve and protect life for all marine mammals, humans, and our shared oceans by…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 85 contacts → | ||||
Strong evidence “Marine Conservation Institute is a team of highly-experienced marine scientists and environmental policy advocates dedicated to saving ocean life for us and future generations.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 82 contacts → | ||||
Indirect evidence “L'Institut océanographique s'attache à mieux faire connaître la richesse et la fragilité des océans et à promouvoir une gestion durable et une protection raisonnée et efficace de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 72 contacts → | ||||
Indirect evidence “Coral Gardeners started in 2017 on Mo’orea, the sister island of Tahiti in French Polynesia after a small group of young surfers, freedivers, and fishermen noticed the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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 conservation groups. 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 conservation groups.
- Partial evidence
- Its own public description names part of marine conservation groups, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name marine conservation groups. 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 1,140 marine conservation groups worldwide
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Marine conservation groups worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 conservation groups, 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.
- Coverage
- Every country. Country and city lists for marine conservation groups are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “marine conservation groups”. 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 conservation groups), 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 conservation groups, and records with no verified work email.
- 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, 4,405 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 20, 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.
Marine conservation groups by location
9 lists · largest firstEvery Marine conservation groups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Marine conservation groups based in the United States209
- Marine conservation groups based in France71
- Marine conservation groups based in the United Kingdom69
- Marine conservation groups based in Indonesia53
- Marine conservation groups based in Australia44
- Marine conservation groups based in Spain40
- Marine conservation groups based in Italy35
- Marine conservation groups based in Brazil32
- Marine conservation groups based in Canada25
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 conservation groups, 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 conservation groups are there worldwide?
RevenueBase identified 1,140 marine conservation groups worldwide 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?
Wildlife Conservation Society, headquartered in Bronx, tops this list with the largest team on record.
Which country has the most marine conservation groups?
The United States leads with 209 companies, followed by France (71) and the United Kingdom (69). Every marine conservation groups list by country and city is linked on this page.
Which city has the most marine conservation groups?
London leads with 15 headquartered companies, followed by Barcelona (7) and Paris (7).
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 4,405 verified decision-maker contacts tracked across these 1,140 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 20, 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.