The South African National Biodiversity Institute (SANBI) leads and coordinates research, and monitors and reports on the state of biodiversity. The focus areas of their Marine Programme have included marine biodiversity assessment, monitoring, planning, mainstreaming, information management and science-based policy advice.

SANCOBB's primary objective is to reverse the decline of seabird populations through the rescue, rehabilitation and release of ill, injured, abandoned and oiled seabirds. From the website: 'In a normal year where no oil spills occur, SANCCOB treats up to 2 500 seabirds, of which approximately 1 500 are African penguins. The remainder include various cormorants species (including the endangered Bank cormorant and Cape cormorant); various species of terns; pelagic birds such as albatrosses, gannets and petrels; oystercatchers, gulls, pelicans and other coastal birds found in the region. On average, 24 different seabird species are rehabilitated every year.'

SEAME Sardinia is a conservation organization with the mission to protect cetaceans in the Mediterranean Sea, combining research with citizen science and education. Founded by a group of marine biologists, they offer active learning by direct involvement in research, education and conservation of whales, dolphins and their habitat. SEAME was created in collaboration with the University of Sassari (DIPNET) studying cetaceans offshore North-eastern Sardinia

Save Our Sea Turtles (SOS) is a not-for-profit, community based, volunteer organization based on the island of Tobago, with (as one might rightly assume) the purpose of sea turtle conservation. Since its founding in 2000, SOS's work has greatly improved the survival outlook for sea turtles in Tobago. Their stated aim is 'To conserve our local sea turtle population and their coastal and marine habitat through community based initiatives in research, education and eco-tourism.' The group is a member of WIDECAST.

The Save Our Seas Foundation supports marine projects in the areas of Conservation, Awareness, Research and Education. Since 2003, the Foundation has been dedicated to protecting life in our oceans, especially sharks and rays. It supports researchers, conservationists and educators around the globe by funding their projects and helping them to tell important scientific and environmental stories. Centres in South Africa (Cape Town), Seychelles and the USA (Miami, Florida) are dedicated to learning about sharks and rays and sharing that knowledge.

Save Our Sharks is a project initiated by Sarah Geron, with the intention of raising awareness about the threats faced by sharks today all over the world, eg. finning. Their goal is to raise awareness and stimulate discussion. They operate with the approval of the Save Our Seas Foundation (SOS), who are dedicated to improving the health of the oceans and all of their creatures.

Involved in the Balearic islands off mainland Spain, Save the Med arranges scientific expeditions, ocean clean-up of plastic pollution, education, amongst other activities, via a team of experienced marine scientists and divers who work closely with local authorities and stakeholders. They have created an effectively managed network of Marine Protected Areas around the Balearic Islands, allowing marine ecosystems to recover and thrive together with prospering local communities and industries.

SAMS is an independent marine science organisation in Scotland that 'provides the research, education and enterprise that society needs to protect and make use of our seas and oceans. It operates with a vision to secure healthy and sustainable oceans' . Their multidisciplinary researchers focus on three complex societal challenges: 1. to increase our understanding of ocean systems (by studying physical oceanography, ecosystem function, biogeochemist and Arctic science); 2. to provide tools and knowledge to manage the health and uses of our changing coasts (by researching climate change impacts, pollution, marine conservation, fisheries and social science); and 3. to support the development of a sustainable blue economy (focusing on aquaculture including seaweed production, energy generation, and biotechnology).

Part of Scubabo Dive Operator, Quantum Scubabo Technical sector has developed commercially recognised training and research programs according to international marine scientific diving requirements, to train scientists that take part in marine research activities, such as surveying, monitoring and inspecting. Projects they have been/are involved in include Eye on the Reef (co-created the Rapid Monitoring, and Reef Health and Impact Survey for monitoring the Great Barrier Reef) and Point Wilson Waterside Infrastructure Remediation (PWWIR) Project (including monitoring marine mammals, marine flora and fauna surveys, habitat monitoring)

Founded in 2014 by Dr Simon Elwen and Dr Tess Gridley, Sea Search is principally a scientific organisation that aims to conduct high quality, internationally recognised research in the marine realm. The Sea Search group is a collective of scientists and students with a strong academic background in the area of marine mammal science. They also provide specialist consultancy services and work with industry and government to promote conservation through effective management. Amongst others, they are involved in Namibian Dolphin Project, are co-ordinating Killer Whale Research and Catalogue, and one of their core programmes is the African Bioacoustics Community

Sea Turtle Conservation Bonaire’s works to ensure that 'Bonaire’s sea turtles have a secure future, and to connect people to sea turtle conservation in ways that inspire caring for nature.' They do this by a variety of strategies, including satellite tracking, in water surveys, nest monitoring, rescue, seagrass protection, clean-ups including fishing line, education and advocacy.

sea4soCiety aims at developing innovative and societally accepted approaches to improve the natural potential for carbon storage in coastal ecosystems. sea4soCiety is one of six research consortia within the research mission “Marine carbon sinks in decarbonization pathways” of the German Marine Research Alliance (DAM). The project will determine the blue carbon potential of coastal ecosystems along the Wadden Sea and Baltic Sea coasts (focusing on saltmarsh, seagrass, and seaweed) as well as in tropical Colombia and Indonesia (focusing on mangroves, saltmarsh, and seagrass). sea4soCiety is itself a consortium of ten research institutions across northern Germany, operating under the auspices of CDRmare.