Oceana is the largest international organization devoted to ocean conservation, with the Belize office focusing particularly on protecting their barrier reef from offshore oil drilling. In December 2017, Belize made history by unanimously passing the Petroleum Operations (Offshore Zone Moratorium) Bill, 2017 which placed an indefinite moratorium on offshore oil in Belize’s marine territory. With the moratorium now under threat, Oceana remains committed to ensuring that the legislation remains in force.

Oceana Philippines seeks to restore marine life in the Philippine seas, including promoting sound science-based policies to help ensure sustainable fisheries and vibrant marine ecosystems. Their current campaigns focus on sustainable fishing, protecting corals and stopping pollution of the seas by plastic and dumping.

Oceans Without Borders is a collaboration between &BEYOND – a luxury travel company with its roots in conservation and experiential guest experiences, and Africa Foundation – a non-profit organisation dedicated to community-led development and conservation of Africa’s natural environments. Working with coastal and island communities, Oceans Without Borders is dedicated to marine conservation and community development at sites where &BEYOND and Africa Foundation operate, including in Africa, South Asia and South America. Through research, conservation initiatives, raising awareness and working closely with local communities, governments and other stakeholders, they work on projects to protect the marine environments, including coral reefs restoration on Zanzibar in Tanzania.

Oceanus, A.C. is a non-profit organization based in Quintana Roo, Mexico that develops projects for the conservation of coral reefs.

LGBTQIA+ scuba diving club in south Florida with an emphasis on marine conservation and reef protection with every dive. In their own words: 'Out Scuba, Inc. was founded in Fort Lauderdale, Florida by Christopher Duncan and Andre Saade, ocean conservationists and members of the vibrant LGBTQIA+ community in the area. The founders want to share a love for the sea with other like-minded individuals. Our goal is to create a club that equally impacts our community and the reefs that we love. We want to create a fellowship that outlasts us. Eventually Out Scuba will reach far beyond Fort Lauderdale and environs, with chapters in other cities around the country, and possibly around the world. For now, reefs and wrecks of Broward County are home base… Our mission is to create an inclusive and safe community for LGBTQIA+ scuba divers and free divers, promoting ocean conservation and environmental activism. We provide a platform for members to explore recreational scuba opportunities, educating the larger diving community about the presence and contributions of LGBTQIA+ individuals.'

PADI's foundation has evolved from Project Aware to PADI AWARE Foundation as of April 2021. It was established to help conserve underwater environments through a wide variety of activities including education, advocacy, and action, and covers coral reef restoration, protection of sharks and rays, marine debris, marine protected areas, amongst others.

PADI's foundation has evolved from Project Aware to PADI AWARE Foundation as of April 2021. It was established to help conserve underwater environments through a wide variety of activities including education, advocacy, and action, and covers coral reef restoration, protection of sharks and rays, marine debris, marine protected areas, amongst others. The office in Brookvale in the north of Sydney serves the Asia Pacific area.

PADI's foundation has evolved from Project Aware to PADI AWARE Foundation as of April 2021. It was established to help conserve underwater environments through a wide variety of activities including education, advocacy, and action, and covers coral reef restoration, protection of sharks and rays, marine debris, marine protected areas, amongst others. The Bristol office is the HQ for Europe, the Middle East and Africa (EMEA)

The Pacific Coral Reefs Institute (IRCP) is an institute of The Ecole Pratique des Hautes Etudes (EPHE), created in 2009, with the mission to set up a network of monitoring of coral reefs. Since 2009, IRCP and CRIOBE set up new sites of monitoring in partnership. Nine sites of monitoring of coral reefs in the Pacific and in French Polynesia (Pitcairn, Tonga, Cook) were established in 2009, with new sites of monitoring established in the following years, in particular in the nearby countries of the South Pacific (Kiribati, Samoa).

Founded by philanthropists Jody Allen and the late Paul G. Allen of Microsoft, the PGA foundation supports conservation efforts to 'preserve ocean health, protect wildlife, combat climate change, and strengthen communities'. This includes 'improving understanding of sharks, rays, and coral reefs through academic research and applying that knowledge toward conservation efforts.' This is achieved by granting funding to conservation organizations.

Founded and run by experienced scuba divers, People and the Sea was created as a marine conservation initiative which also offers a sustainable livelihood to the communities who are very reliant on the sea. Working on Malapascua, and in the wider region, the focus of their operations is ‘to support the local community and relevant stakeholders in developing locally inspired methods of conserving their marine environment.’ This work includes extensive coral reef protection and restoration, removal of crown of thorns starfish, coastal clean-ups amongst their many activities which includes training the many volunteers who work on their projects. They partner with Blue Ventures on projects in the area.

The Perry Institute for Marine Science is a not-for-profit organization committed to protecting the oceans through research that both informs the public and encourages action, ultimately improving understanding and stewardship of the oceans, with a focus on coral reefs, fisheries, mangroves, Marine Protected Areas, coastal ecosystems, and climate change. The Institute has been conducting research in support of ocean conservation and stewardship throughout the Caribbean. Some of the core programs have centered around the effective use of Marine Protected Areas for marine conservation and fisheries management, the health of coral reefs and associated ecosystems, and the management of key Caribbean fishery species like the queen conch, Caribbean spiny lobster, and particularly the Nassau grouper.