Upcoming Deadlines

Range 30 days 3 months 6 months 12 months
Source EU Federal (DE) Schleswig-Holstein Mecklenburg-Vorpommern Lower Saxony Foundation Private US Foundation UK Nordic UN / Multilateral Corporate Impact Investor Philanthropic Network International
Relevance ≥70% ≥50% ≥30%
Topic Aquaculture Biodiversity Blue Economy Capacity Building Circular Economy Climate Coastal Protection Coral Reefs Education Fisheries Marine Conservation Marine Protected Areas Plastic Waste Pollution Recycling & Upcycling Research Seaweed & Algae Waste Management
Mechanism Accelerator Blended Finance Grant Investment Loan / Concessional Finance Prize Technical Assistance
Region Africa Arctic Baltic Sea Global India Mediterranean Nordic / Denmark North Sea Southeast Asia
Audience For Communities / Cooperatives For NGOs For Researchers For Startups
Funder-type Corporate Family Office Foundation Government Impact Investor Multilateral Philanthropic Network Research Council
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5 fixed deadlines, 20 rolling/open

March 2026

31.03. 11d left
Caribbean BluEFin Project (CBF) · Caribbean Biodiversity Fund (CBF) — Caribbean BluEFin Project · USD 200,000–250,000 per project; co-financing in cash and/or in-kind is highly encouraged
For NGOs Foundation Grant Aquaculture Biodiversity Blue Economy Circular Economy Coral Reefs Fisheries Marine Conservation
31.03. 11d left
Save Our Seas Foundation - Keystone Grants · Save Our Seas Foundation (SOSF) · USD 10,000–100,000 per year; average USD 25,000 per annum. Biennial cycle, up to 3 years total duration with annual continuation applications possible.
For NGOs For Researchers Foundation Grant Global Biodiversity Education Marine Conservation Research

April 2026

12.04. 23d left
National Geographic Society Grants - Ocean Exploration & Discovery · National Geographic Society · Level I grants up to USD $20,000; Level II grants up to $100,000
Foundation Grant Global Education Marine Conservation Plastic Waste Research
19.04. 30d left
Nippon Foundation-GEBCO Training Programme (Ocean Bathymetry Fellowship) · Nippon Foundation (Japan) / GEBCO (General Bathymetric Chart of the Oceans) · Full tuition and fees paid; annual stipend of approximately US$39,400; computer hardware, software, textbooks; one return airfare; return airfare for work experience cruise and visiting institution
For Researchers Foundation Grant Global Capacity Building Education Marine Conservation Research

May 2026

31.05. 72d
Save Our Seas Foundation - Small Grants · Save Our Seas Foundation (SOSF) · Up to USD 10,000; average USD 5,000. Funding awarded for one financial year only (12-18 months project duration).
For Researchers Foundation Grant Global Biodiversity Education Marine Conservation Research

Rolling / Open Deadlines

periodic
Oceanic Society - Expedition Impact Program Conservation Grants · Oceanic Society · Annual, Spring deadline: February 1 (awards announced March 15); Fall deadline: August 1 (awards announced September 15). Rolling consideration for time-sensitive opportunities from active expedition partners.
For NGOs Foundation Grant Global Biodiversity Marine Conservation Plastic Waste
periodic
Creative Destruction Lab (CDL) - Oceans Stream · Creative Destruction Lab (CDL-Atlantic) · Annual, applications open rolling with cohort starting September. Apply via creativedestructionlab.com/application-triage/
For Startups Foundation Accelerator Technical Assistance Global Aquaculture Blue Economy Fisheries
periodic
Pew Fellows Program in Marine Conservation · The Pew Charitable Trusts · Annual, typically announced in March
For Researchers Foundation Grant Global Biodiversity Coral Reefs Fisheries Marine Conservation Marine Protected Areas Research
periodic
Mesoamerican Reef Fund (MAR Fund) · MAR Fund (Mesoamerican Reef Fund) · Annual, typically mid-year (18th RFP deadline was September 9, 2025)
For NGOs For Researchers Foundation Grant Biodiversity Coral Reefs Fisheries Marine Conservation Marine Protected Areas
periodic
Whitley Fund for Nature (Whitley Awards) · Whitley Fund for Nature (WFN) · Annual. 2026 applications now closed. Typically opens mid-year for following year awards ceremony in May.
For NGOs Foundation Grant Prize Global Biodiversity Coastal Protection Marine Conservation Marine Protected Areas
Rolling
Vancouver Aquarium Ocean.org - Ocean Action Grants · Ocean Wise (ocean.org) / Canada Service Corps · December 4, 2026 (final report deadline; applications accepted on rolling basis)
For Communities / Cooperatives Foundation Grant Capacity Building Education Marine Conservation Plastic Waste
periodic
Save Our Seas Foundation - Funding Guidelines · Save Our Seas Foundation (SOSF) · Keystone Grants Stage I opens March-April 2026; Small Grants Stage I opens May 2026; applications are currently closed
For Researchers Foundation Grant Global Biodiversity Education Marine Conservation Research
periodic
Pew Marine Fellows Program · The Pew Charitable Trusts · Periodic (annual cycle, nomination-based; no open call)
For Researchers Foundation Grant Global Biodiversity Marine Conservation Research
periodic
StartBlue Ocean Enterprise Accelerator (VentureWell/Scripps) · VentureWell / NOAA IOOS · Periodic, Spring and Fall cohorts annually (Spring 2026 Stage 0 deadline: April 7, 2026)
For Researchers For Startups Foundation Accelerator Grant Aquaculture Blue Economy Marine Conservation
periodic
Blue Action Fund Grant Programme · Blue Action Fund · Periodic, per Call for Proposals (currently no open or upcoming calls)
For NGOs Foundation Grant Africa Global Southeast Asia Biodiversity Coastal Protection Fisheries Marine Conservation Marine Protected Areas
periodic
Schmidt Marine Technology Partners · Schmidt Marine Technology Partners (Schmidt Family Foundation) · Portal closed for 2025. Reopening early 2026 — check schmidtmarine.secure-platform.com
For NGOs For Researchers For Startups Foundation Grant Global Blue Economy Marine Conservation Pollution Research
Rolling
MAR+Invest (MAR Fund) · MAR Fund / Global Fund for Coral Reefs (GFCR) · Rolling basis
Foundation Multilateral Blended Finance Climate Coastal Protection Coral Reefs Marine Conservation Marine Protected Areas
Rolling
Schmidt Ocean Institute - Research Vessel & Grant Program · Schmidt Ocean Institute · Rolling basis
For Researchers Foundation Grant Technical Assistance Global Blue Economy Marine Conservation Research
Rolling
Lloyds Register Foundation - Ocean Safety Grants · Lloyd's Register Foundation · Rolling basis
For NGOs For Researchers Foundation Grant Africa Global India Southeast Asia Blue Economy Capacity Building Climate Education Fisheries Marine Conservation Research
Rolling
New England Aquarium - Marine Conservation Action Fund (MCAF) · New England Aquarium - Marine Conservation Action Fund (MCAF) · Rolling basis
For NGOs For Researchers Foundation Grant Global Biodiversity Capacity Building Coral Reefs Fisheries Marine Conservation Marine Protected Areas
Rolling
Schmidt Marine Technology Partners (Schmidt Family Foundation) · Schmidt Marine Technology Partners (a program of the Schmidt Family Foundation) · Rolling basis
For NGOs For Researchers For Startups Foundation Grant Global Blue Economy Fisheries Marine Conservation Pollution Research
Rolling
The Ocean Foundation Grantmaking · The Ocean Foundation · Rolling basis — Letters of Inquiry reviewed quarterly; open RFPs posted when available
For NGOs Foundation Grant Global Biodiversity Capacity Building Coastal Protection Education Marine Conservation Marine Protected Areas
Rolling
Schmidt Marine Technology Partners Grantmaking · Schmidt Marine Technology Partners (a programme of the Schmidt Family Foundation) · Rolling basis — proposals can be submitted via the online portal at any time.
For NGOs For Startups Foundation Grant Global Blue Economy Fisheries Marine Conservation Plastic Waste Research
Rolling
Earthwatch Institute - Ocean Ecosystems Research Grants · Earthwatch Institute · Rolling basis, starting April 2026 for new projects beginning in 2028
For Researchers Foundation Grant Global Biodiversity Marine Conservation Research
periodic
Pew-Gerstner Fellowships for Ocean Plastic Pollution Research · The Pew Charitable Trusts and Gerstner Philanthropies · Rolling; three Pew-Gerstner Fellows to be selected over two years (2025-2026). First fellow announced 2026.
For Researchers Foundation Grant Global Marine Conservation Plastic Waste Pollution Research