Costa Rica-based Pretoma is a marine preservation group which speaks out against the country's role in the international shark fin trade. The International Shark Foundation has listed over two hundred shark species as endangered and Costa Rica has become a focal point for this cruel trade. The organisation also carries out research to help protect ocean resources and to encourage sustainable fisheries policies in the country and Central America. As part of their efforts, Pretoma organises year-round public awareness marine conservation campaigns as well as education programs in educational institutions in the country. Sea Turtle Restoration Project (STRP) is part of their programme.

A Peruvian organization that conducts research and conservation projects in marine species and their interactions with local fisheries, Pro Delphinus is dedicated to the conservation of threatened and endangered marine fauna. Actively involved in a campaign to legally ban the take and consumption of dolphins in Peru. The focus of their research is currently on endangered species, including sea turtles, marine otters, cetaceans, seabirds and sharks, and their protection.

Project Seahorse is a marine conservation organization committed to the conservation and sustainable use of coastal marine ecosystems in general, and seahorses in particular. It is an international and interdisciplinary organization comprised of biologists, development specialists, and other professionals committed to conserving and managing seahorses, their relatives and habitats, through research, education, empowering communities, establishing marine-protected areas, managing subsistence fisheries, restructuring international trade, redressing habitat loss. Their seahorse projects are located in: Australia, China, Malaysia, Philippines, Portugal, Senegal, South Africa, Thailand, USA and Vietnam. On their website one can access their citizen science tool called iSeahorse when one can report sightings of seahorses.

The focus of RAMPAO is on the marine ecoregion of West Africa, the members of the group being Cape Verde, Gambia, Guinea-Bissau, Guinea, Mauritania, of Senegal and Sierra-Leone. They aim at conserving the marine habitats of the region for the benefit of all. This includes developing Marine Protected Areas; preserving and restoring the critical habitats necessary for the renewal of fishery resources; supporting one another through information exchange and mutual learning; strengthening their mutual capacities for advocacy, defense of interests and representation of MPAs in the region in the international framework.

REE.PH operates under the corporate entity of the Coral Triangle Conservancy Inc., with the objective 'to establish networks of No-Take, Enforced, Old, Large, Isolated (NEOLI) marine sanctuaries, to expand public awareness of unsustainable commercial fishing practices, and to rehabilitate coral reefs that have been destroyed by a combination of destructive human activities.' This includes fish and coral nurseries that increase food supply and insure biodiversity, and sustainable initiatives involving all the stakeholders including local communities and scientists. The marine sanctuaries 'Lifeboat Projects' are strategically located around the Philippines.

RMP was started by a group of concerned divers and conservationists to protect Roatan’s reefs and ecosystems. They are 'dedicated to the conservation of Roatan’s protected marine and coastal area including all of its flora, fauna, physical and biological characteristics and phenomena, and historical and cultural resources'. They achieve this by a number of practical initiatives, including conducting research into marine species such as sharks, turtles and corals while involving the public in citizen science projects, by creating marine infrastructures so as to minimize damage to reefs such as moorings management, by educating via outreach programmes to local communities and divers, amongst others. In addition, they have a lionfish eradication programme.

SAN is committed to conserving the unique environment and biodiversity along Thailand’s Andaman coastline. They promote sustainable marine resource management, build community capacity, raise awareness towards coastal conservation efforts and develop alternative economic opportunities to fisheries-dependent communities. Their current projects include a seagrass programme (part of the Seagrass Ecosystem Services Project), waste reduction and addressing marine litter issues, ecosystem management development, amongst others.

SFF informs and educates the general public, and children in particular, about the importance of the world's oceans and what threats are posed to the marine environment. By creating awareness, SFF tries to reduce or (preferably) stop the detrimental human influence on the oceans and all marine life, whether it be underwater or topside (like seabirds). SFF was founded by people who are involved in the oceans in many diverse ways, through work, training, hobby or general interest. Educational resources are available on its website (films)

Sea Sense is a community based, Tanzanian NGO that is dedicated to the conservation and protection of endangered marine wildlife and their habitats in Tanzania. They work closely with coastal communities to conserve and protect endangered marine species including sea turtles, dugongs, whales, dolphins and whale sharks, and to support sustainable small-scale fisheries. Sea Sense started as the Tanzania Turtle & Dugong Programme in 2001. Within two years, over 230 nests had been protected and over 10,000 sea turtle hatchlings had safely reached the sea. Levels of nest poaching reduced dramatically from 80% to less than 2%.

SeaWatch was founded in 1993 by a small group of Americans and Mexicans concerned with the destruction of fisheries in the Sea of Cortes by illegal fishing. Since then they have achieved the prohibition of the use of compressed air for any fish extraction in all Mexico’s ocean waters. SeaWatch works with a local supporters group ROC (Red de Observadores Duidadanos) to stop illegal fishing in the Bay of La Paz and to stimulate the recovery of fish in the area .

Seas At Risk is an association of environmental organisations from across Europe, working together to ensure that life in our seas and oceans is abundant, diverse, climate resilient, and not threatened by human activities. Its mission is to promote ambitious policies for marine protection at European and international level. With over 30 members representing the majority of European countries

Shark Stewards' mission is to restore ocean health by saving sharks from overfishing and the shark fin trade, and protecting critical marine habitat through the establishment of marine protected areas and shark sanctuaries. Founded in 2006, Shark Stewards is a leader in advocating and legislation to regulate overfishing sharks, the shark fin trade and creating marine protected areas. Project of the Earth Island Institute.