San Francisco, CA

MarAlliance

EIN 46-4381820

Environment & Animal Welfare Wildlife & Habitat Conservation

Mission

Explore, enable, and inspire conservation action for threatened marine wildlife and their critical habitats, working with dependent human communities.

IRS-recognized 501(c)(3) public charity Contributions are tax-deductible

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About MarAlliance

MarAlliance is a tax-exempt 501(c)(3) nonprofit (EIN 46-4381820) headquartered in San Francisco that conducts applied tropical marine research to support conservation and management of large marine wildlife and their habitats across the Mesoamerican Reef, the Southern Caribbean and the Eastern Tropical Pacific. The organization combines long-term biological monitoring (photo ID, acoustic and satellite tagging, eDNA and BRUVs) with community engagement, fisher training and policy support to inform protected-area effectiveness and sustainable fisheries management.

In the last 2–3 years MarAlliance has continued to expand field programs and partnerships, securing international grants and public engagement projects, deploying satellite tags and eDNA monitoring, and advancing community-led conservation initiatives (including mangrove restoration and education campaigns) across Belize, Panama, Mexico and other regional sites. The EIN and organizational details were verified against the organization’s official site, publicly available Form 990 filings, and third-party nonprofit databases, confirming this is the correct, active donor-facing charity.

Notable achievements

Long-term monitoring program

Established and maintained multi-decadal monitoring of marine megafauna (sharks, rays, sea turtles and large reef fishes) across multiple countries, contributing over 1,200 individual animal records and baseline datasets used for management and research.

Scientific evidence supporting policy change

Provided data and technical support that contributed to regional fisheries reforms and protective measures — including long-term contributions to policies restricting harmful gear such as gillnets in areas where MarAlliance works.

Expansion of community-led projects and secured grants

Scaled community engagement and education programs and attracted international funding and partnerships (including competitive conservation grants and foundation collaborations) to advance mangrove conservation, fisheries monitoring, and public education initiatives in the region.

At a glance

Total assets: $2.7M
Annual revenue: $922K
Tax status: 501(c)(3)Public charity
EIN: 46-4381820
Location: San Francisco, CA
Website: maralliance.org
On Mahalo since: April 2026

Financial figures from the IRS Business Master File, the IRS’s registry of tax-exempt organizations.

Recognition

Four-star rating on Charity Navigator (high overall score for accountability and finance).

Listed member/partner with recognized conservation networks and donor platforms (including One Percent for the Planet and foundation partners such as Save Our Seas Foundation and Blue Social Conservation Fund-supported projects).

Regularly featured in international conservation press and invited to participate in regional and global fora (UN/IUCN/CITES-related meetings and scientific conferences) for marine megafauna conservation.

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