Coastwatch KZN is an NGO which is actively involved in the protection and management of the Kwazulu-Natal coastline of South Africa, with the aim 'to become an effective coalition of concerned people working to achieve the long-term protection and sustainable management of natural resources of the coastal zone and offshore marine resources.' This includes working in collaboration with other NGOs in attempting to limit the volumes of land derived waste entering our oceans, protecting the integrity of estuaries from mining along with other developments. The majority of the membership has a scientific background and the organization has representation on all of the Local and District Authorities’ Coastal Working Groups,

Coral Reef Care (CRC) focuses on the conservation and protection of marine ecosystems, in particular coral reefs, by initiating and organising reef conservation projects and creating public awareness on the importance of coral reefs. This involves, amongst others, the restoration of damaged reefs, removal of lost fishing nets on coral reefs, campaigns to reduce plastic waste, creation of artificial reefs, creation of No Take Zones and the protection of specific marine species. Taking the approach that effective conservation projects must involve local communities, they generate jobs for local communities in the conservation business.  One of Coral Reef Care’s main goals is to set up more MPAs (Marine Protected Areas). They have projects in several places Asia and Africa, including Bali, Indonesia, Maziwe Island in Tanzania, and Kinuni near Vipingo in Kenya. . In addition, they have a initiated a project which focuses on shark and ray protection, specifically in South and Mid Kenya and carried out with Cordio East Africa in Mombasa. To their current target groups, i.e. school kids and fishermen, they explain the importance of these magnificent species, their crucial role in the ecosystem, threats to their existence, and the solutions to protect them.

DEEPWAVE e.V. was founded in 2003 by the marine biologist and deep sea researcher Onno Groß and a small group of ocean enthusiasts in Hamburg. Since then, it has successfully campaigned regionally and internationally for the protection of the oceans and their inhabitants. DEEPWAVE's goal is to contribute to the development of environmentally friendly structures for the marine ecosystem, as well as to inspire individuals to conserve the oceans. They do this by raising awareness of the threats to the oceans, spreading scientific knowledge, contributing to improve marine policies, and providing a forum for networking.

An initiative of Dive Friends Bonaire, Debris Free Bonaire encourages local residents and visitors to the Caribbean island of Bonaire to take action and volunteer a small amount of their time to collect plastic marine debris from Bonaire’s east coast. Jan 2023: Debris Free Bonaire website inactive - prefer https://www.divefriendsbonaire.com/eco-activities/

The German Foundation for Marine Conservation is a group of committed animal welfare and nature conservation advocates, who fight for the protection of threatened marine animals and the preservation of marine habitats. They support and carry out projects, campaigns, and initiatives aimed at conserving marine life. This includes marine & nature conservation; animal welfare; science and research; and development cooperation. Since 2022 they have had a long term eDNA Project on Fiji-Island to identify habitats of guitarfish species and of young bullsharks. They support projects to protect sharks, rays, sea turtles and marine mammals, restoration of coral reefs and seagrass beds, for sustainable fishing and ocean cleanups. Their educational and awareness-raising work aims at anchoring the importance of marine conservation in people's minds and actions. LinkedIn address: https://de.linkedin.com/company/deutsche-stiftung-meeresschutz

Dive against Debris is an PADI Aware Foundation initiative which encourages all divers to become citizen scientists by removing pollution from the marine environment while diving. PADI offers a speciality course on the subject. The website provides an interesting map for tracking debris, and various toolkits.

The Dyer Island Conservation Trust works to conserve and research the fragile and critically important marine eco-system at the southern-most tip of Africa. They strive to protect the largest surviving colonies of the endangered African Penguin whose numbers are at an all-time low; the globally important breeding and calving grounds of the Southern Right Whale; and, the world's densest populations of the vulnerable Great White Shark.

Earth Island Institute is known for its activism on environmental issues. Founded in 1982 by environmentalist David Brower, it is a non-profit environmental organization and fiscal sponsor to more than seventy-five projects working in the areas of conservation, including amongst many others, projects related to the oceans. Not without controversy, they have targeted fishing methods and plastic pollution of the oceans, amongst many other issues.

Earth Justice is a non-profit public interest environmental law organisation which uses the power of law to protect people's health, to preserve natural places and wildlife, to advance clean energy, and to combat climate change. Earthjustice fights to protect the ocean ecosystem from overfishing, massive pollution and habitat loss, aiming at a healthy ocean strong enough to weather the changes ahead.

The Ecology Action Centre is a member-based environmental charity in Miꞌkmaꞌki (Nova Scotia) taking leadership on critical issues from biodiversity to climate change to environmental justice. Their coastal team works and advocates to protect coastal ecosystems and to help Nova Scotians understand the risks of coastal climate change and the adaptation options available. Their Marine programme aims to protect the marine ecosystem and maintain sustainable fisheries which support coastal communities and livelihoods. Here they focus on three main areas: i. Sustainable Fisheries and Aquaculture, advocating for fishing and aquaculture policies and practices that minimize harmful impacts on the marine ecosystem. ii. Marine Protection, supporting and advocating for marine protection and pollution reduction in the marine environment, both within Canadian waters and on the high seas. This includes marine protected areas, protection from bottom trawling. iii. Sustainable Seafood, working towards increasing consumer and retailer access to properly labelled, sustainable seafood choices, including SeaChoice.

ESO works to help conserve Oman's natural heritage and raise awareness about different environmental issues, with the marine projects focusing on turtles, whales and dolphins. and protecting the Damaniyat Islands Nature Reserve.

EFI works in 14 Indian states to revive the severely polluted freshwater bodies in the country, including lakes and ponds which suffer contamination due to human activity. It focuses on community based collaborative conservation efforts. It has been included in the marine conservation database since inevitably what enters any waterway will eventually make its way to the ocean if not stopped.