- Fisheries and Aquaculture Department (UN): Fishlex
- International Maritime Bureau
- Federal Maritime Commission
- NOAA: National Oceanic and Atmospheric Association
- United States Coast Guard
- NOAA Fisheries Service: Northeast Regional Office
- U.S. Navy
- National Marine Fisheries Service
- Miami University’s Rosenstiel School of Marine and Atmospheric Science
- Scripps Institute of Oceanography: A leader in ocean research and public education in the marine sciences
- Right Whale Listening Network (Cornell University): Listen to a whale, check out where the latest right whale spotting occurred and learn more about these threatened ocean giants.
- Joint Institute for the Study of the Atmosphere and Ocean: A collaboration between NOAA and the University of Washington to study climate, the ocean and fishery science
-Whale Center of New England: Based in Gloucester, Mass.; focuses on whale research, education and conservation
- National Marine Sanctuaries Media Library: A searchable database of high res still images and video of the planet’s oceans and the marine life they contain.
- Google Oceans:Google has mapped the world's oceans.
- Massachusetts Tide Charts
- Globefish, a unit of the Food and Agriculture Organization of the United Nations, is a resource for information on international fishing.
- MarineMap.org assists organizations that map the oceanographic, biological, geological, chemical, and human dimensions of the ocean and coastal areas.
- Marine Life Protection Act Initiative: A California state directive to designate, manage and protect marine life and habitats, marine ecosystems and marine natural heritage
- Vessel Traffic and Positions: The Department of Product and Systems Design Engineering at the University of the Aegean in Greece has launched a project to track ships at sea.
- Fishbase is an impressive database with information on more than 31,200 species of fish.
- Casco Bay Boaters is a comprehensive resource for boating in Maine. Along with maritime-related news, the site includes a wealth of useful links ranging from lobster festivals to amusing blogs to weather and boating conditions in the Gulf of Maine.
- Good Morning Gloucester: A daily blog of “life on the dock” in and around Gloucester, Mass.
- Sea Fever: A blog for all things maritime. Check it out to explore maritime culture through the eyes of founder Peter Mello, former executive director of American Sail Training Association
- National Week of the Ocean: Set aside some time to honor, protect and learn about the ocean.
- Sailors for the Sea: A boston-based non-profit dedicated to promoting awareness about the need to protect the world's oceans.
- Pacific Science Center
- Massachusetts Ocean Partnership: A public-private collaborative effort to manage and protect the coastal ocean waters in the state.
- Shifting Baselines: Common Sense for the Ocean
- Blue Ocean Institute: A conservation organization founded by MacArthur Prize-winning scientist/author Dr. Carl Safina and Mercédès Lee
- Boston Harbor Association
- Sea Shepherd Conservation Society
- Metcalf Institute for Marine & Environmental Reporting
- The Great Garbage Patch: Learn about the mass of plastic and other trash that is plaguing the Pacific Ocean.
- The American Sail Training Association (ASTA)
- The American Oceans Campaign/Oceana
JUST FOR FUN
- J Class Yachts The Web site for the J Class Association