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
Reset all

6 fixed deadlines, 16 rolling/open

March 2026

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

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

September 2026

23.09. 187d
EU Digital Twins of the Ocean (DTO) - Horizon Europe · European Commission / Horizon Europe (Mission: Restore Our Ocean and Waters) · EUR 120 million earmarked for 2026-2027 across the Mission Ocean & Waters call. Specific topic HORIZON-MISS-2026-03-OCEAN-05 budget not stated per topic — refer to the Funding & Tenders Portal for budget breakdown.
For Researchers Multilateral Grant Arctic Baltic Sea Mediterranean North Sea Biodiversity Blue Economy Climate Coastal Protection Marine Conservation Research
30.09. 194d
NOAA Office for Coastal Management Funding · NOAA Office for Coastal Management (U.S. National Oceanic and Atmospheric Administration) · Varies by programme. The FY2025-FY2026 NOAA Broad Agency Announcement is open with funding contingent on appropriations. Individual NOFOs list specific award amounts.
For NGOs For Researchers Government Grant Biodiversity Climate Coastal Protection Coral Reefs Marine Conservation
30.09. 194d
GIZ MA-RE-DESIGN Project - Marine Litter Reduction through Design in Southeast Asia
For NGOs For Researchers Government Multilateral Technical Assistance Southeast Asia Capacity Building Circular Economy Marine Conservation Plastic Waste Pollution Waste Management

Rolling / Open Deadlines

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
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
Rolling
SIDA Sweden Environmental and Climate Programs · Sida – Swedish International Development Cooperation Agency · Next large CSO grant call planned for 2027
For NGOs For Researchers Government Grant Technical Assistance Africa Global Southeast Asia Capacity Building Circular Economy Climate Marine Conservation Plastic Waste Pollution Waste Management
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
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
periodic
Baltic Sea Neighbourhood Programme (BSNP) - Swedish Institute · Swedish Institute (Svenska institutet) · Programme currently closed; new consolidated programme launching March 2026
For NGOs For Researchers Government Grant Baltic Sea Nordic / Denmark Biodiversity Blue Economy Capacity Building Circular Economy Climate Coastal Protection Marine Conservation Pollution Research Waste Management
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
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
periodic
Shark Conservation Fund · Shark Conservation Fund (SCF) · Unknown
For NGOs For Researchers Philanthropic Network Grant Global Biodiversity Fisheries Marine Conservation Marine Protected Areas Research
periodic
NOAA IOOS Integrated Ocean Observing System Funding · NOAA U.S. Integrated Ocean Observing System (IOOS) Program Office · Varies by announcement. Check Grants.gov for current active NOFOs. No single blanket deadline.
For Researchers Government Grant Biodiversity Blue Economy Climate Coastal Protection Marine Conservation Research