Company lists · Data refreshed November 2026

Top 25 Ocean conservation nonprofits based in the United States

RevenueBase identified 658 company matches for ocean conservation nonprofits associated with the United States as of November 2026 and tracks 21,046 professional contacts across them, including 7,473 with verified work emails. San Diego is the largest hub.

This list covers company matches for ocean conservation nonprofits associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
658Companies
21,046Contacts tracked
7,473Verified emails
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The 25 largest ocean conservation nonprofits based in the United States

Ranked by team size
Top 25 of 658 company matches for ocean conservation nonprofits based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBronx, NY, United StatesHQ recorded Nov 6, 20261,001-5,0003,872 contacts →

Exact match

“WCS stands for wildlife and wild places.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026501-1,0001,622 contacts →

Exact match

“Since 1987, Conservation International has worked to spotlight and secure the critical benefits that nature provides to humanity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 20261,001-5,000812 contacts →

Exact match

“As part of SeaWorld Parks & Entertainment™, SeaWorld® San Diego creates distinctive entertainment experiences that blend imagination with a passion for nature.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMonterey, CA, United StatesHQ recorded Nov 6, 2026501-1,000795 contacts →

Exact match

“The mission of the nonprofit Monterey Bay Aquarium is to inspire conservation of the ocean.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchReston, VA, United StatesHQ recorded Nov 6, 2026201-500622 contacts →

Exact match

“As America's largest non-profit conservation organization, the National Wildlife Federation works closely with those who span the social and political spectrum, but who are…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchChicago, IL, United StatesHQ recorded Nov 6, 2026201-500571 contacts →

Exact match

“At Shedd Aquarium, we spark compassion, curiosity and conservation for the aquatic animal world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSarasota, FL, United StatesHQ recorded Nov 6, 2026201-500493 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBoston, MA, United StatesHQ recorded Nov 6, 2026201-500475 contacts →

Exact match

“The New England Aquarium is a catalyst for global change through public engagement, commitment to marine animal conservation, leadership in education, innovative scientific…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBaltimore, MD, United StatesHQ recorded Nov 6, 2026201-500439 contacts →

Exact match

“We are a private nonprofit organization whose mission is to connect people with nature to inspire compassion and care for our ocean planet!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchTampa, FL, United StatesHQ recorded Nov 6, 2026201-500325 contacts →

Exact match

“The Florida Aquarium actively participates in and promotes stewardship of the natural environment as part of our mission of conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Clemente, CA, United StatesHQ recorded Nov 6, 202651-200319 contacts →

Exact match

“The Surfrider Foundation is a 501(c)3 non-profit organization dedicated to the protection and enjoyment of our world’s ocean, waves and beaches.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202651-200297 contacts →

Exact match

“The Seattle Aquarium is a nonprofit Aquarium committed to Earth’s one ocean.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchClearwater, FL, United StatesHQ recorded Nov 6, 2026201-500287 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200247 contacts →

Exact match

“Our ocean is truly awesome-but it is not invincible.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchArlington, VA, United StatesHQ recorded Nov 6, 2026201-500238 contacts →

Exact match

“We are in the business of conservation, creating innovative solutions that drive nature-based action for climate protection, sustainable economies and vibrant communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“At the Center for Biological Diversity, we believe that the welfare of human beings is deeply linked to nature, to the existence in our world of a vast diversity of wild animals…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchGloucester, MA, United StatesHQ recorded Nov 6, 202651-200237 contacts →

Exact match

“Seaside Sustainability is a nationally recognized, award-winning 501(c)3 charitable organization dedicated to community engagement, education and environmental conservation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchCharleston, SC, United StatesHQ recorded Nov 6, 202651-200206 contacts →

Exact match

“OUR MISSION The South Carolina Aquarium inspires conservation of the natural world by exhibiting and caring for animals, by excelling in education and research, and by providing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWailuku, HI, United StatesHQ recorded Nov 6, 202651-200205 contacts →

Exact match

“Pacific Whale Foundation is a non-profit organization founded in 1980 to save whales from extinction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAlexandria, VA, United StatesHQ recorded Nov 6, 2026n/a192 contacts →

Exact match

“Established in 1977, Sea Shepherd Conservation Society (SSCS) is an international non-profit, marine wildlife conservation organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchDraper, UT, United StatesHQ recorded Nov 6, 202651-200185 contacts →

Exact match

“Loveland Living Planet Aquarium is a 501c3 non-profit organization that provides the community with countless educational opportunities to understand and respect our precious…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026n/a166 contacts →

Exact match

“Sustainable Ocean Alliance (SOA) is a global youth-led organization that empowers young leaders and ecopreneurs to build solutions that restore the health of our ocean.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchPortland, ME, United StatesHQ recorded Nov 6, 202651-200139 contacts →

Exact match

“The Gulf of Maine Research Institute (GMRI) pioneers collaborative solutions to global ocean challenges.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“Global Fishing Watch is an international non-profit organization committed to advancing the sustainability of our oceans through increased transparency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchJuno Beach, FL, United StatesHQ recorded Nov 6, 202611-50105 contacts →

Exact match

“Loggerhead Marinelife Center is a nonprofit sea turtle hospital that promotes the conservation of ocean ecosystems with a special focus on sea turtles.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 658 ocean conservation nonprofits based in the United States

See the full list, filter by size, metro and specialty, and access 7,473 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ocean conservation nonprofits based in the United States at a glance

As of Nov 6, 2026
35.5%Verified-email coverage
32.0Average contacts per company
1-10Median size (employees)
3.5%Largest-city concentration · San Diego
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
458
11-50
136
51-200
36
201-500
14
501-1,000
5
1,001-5,000
5
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 658 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “ocean conservation nonprofits” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,473 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ocean conservation nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ocean conservation nonprofits are there based in the United States?

RevenueBase identified 658 company matches for ocean conservation nonprofits associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Wildlife Conservation Society tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most ocean conservation nonprofits?

San Diego leads with 23 company records, followed by San Francisco (19) and Miami (18).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,473 professional contacts with verified work emails tracked across these 658 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.