COMRED aims to promote sustainable development and wise use of coastal and marine resources. The organisation is mandated to carry out an array of activities including research, training, community capacity building, environmental awareness and advocacy and environmental conservation. COMRED works with the grassroots coastal communities of Kenya empowering them to seek local solutions to local problems.

Coastal and Marine Union (Kustenzee) is a non-profit organization with a membership of around 500 institutions, NGOs and experts, in 40 countries. Its network at large involves about 2500 professionals involved in coastal and marine management issues

Coastwatch Europe (CWE) protects wetlands by raising public awareness of their value, and demonstrating practical ways to save them. CWE is an international network of environmental groups, universities and other educational institutions, who in turn work with local groups and individuals around the coast of Europe. Coastwatch Europe has participated at hundreds of events since the 1980’s, facilitates surveys of the coast, litter, seaweed, and advocates for Marine Protected Areas, amongst other actions.

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,

The Commission for the Conservation of Antarctic Marine Living Resources is an international treaty to manage Antarctic fisheries with the goal of preserving species diversity and stability of the entire Antarctic marine ecosystem. It was sent up in response to increasing commercial interest in Antarctic krill resources, a keystone component of the Antarctic ecosystem and a history of over-exploitation of several other marine resources in the Southern Ocean.

The Community of Arran Seabed Trust (COAST) is a community-led organisation that has a significant impact on the conservation and restoration of the seas around Arran and the Clyde for the past 25 years. COAST works to maintain a diverse, abundant and beautiful marine environment on Arran, including by campaigning for marine protection, restoration and sustainable management around Arran and in the Clyde and working with politicians, the Marine Conservation Society, Fauna and Flora International, Scottish Environment Link, Scottish Natural Heritage and many others. They work to influence Government, fishing and aquaculture industries to adopt non-destructive, sustainable fishing methods.

CICI’s goal is ‘to conserve, protect and enhance the natural environment and biodiversity of the habitats and species of the Coral Sea with a particular emphasis around the Conflict Islands Mission Blue Hope Spot in Milne Bay, Papua New Guinea, a critical part of the world renowned Coral Triangle and an important Turtle nesting site.’ Amongst other programmes, sea turtle conservation is one focus area, with a hatchery and nursery established in 2016. A volunteer program, allowing university students and recent graduates to gain practical experience. The program involves a combination of turtle tagging and monitoring, turtle husbandry and data entry. They work closely with communities to provide education, training and improve the conservation of marine ecosystems and associated species.

Conservación ConCiencia is a non-profit organization in Puerto Rico dedicated to environmental research and conservation that aims to promote sustainable development by working collaboratively with communities, governments, academia and the private sector. Their mission is to implement effective, science based conservation actions that move our societies towards sustainability. Conservación ConCiencia focuses on projects in Puerto Rico and Cuba, including the following: Puerto Rico’s first shark research and conservation program in collaboration with the seafood industry; analyzing parrotfish supply chain and its market in Puerto Rico; promoting commercial fisheries exchange between Puerto Rico and Cuba with lessons learned from successful fisheries management and promoting Cuban fishers access to local markets for entrepreneurial opportunities. Another example of their work is a large scale restoration of mangroves and seagrass project, in collaboration with The Ocean Foundation.

The CI Colombia program began with the Eastern Tropical Pacific Seascape (ETPS) initiative, created in 2005, with the aim of generating voluntary cooperation between Colombia, Costa Rica, Panama and Ecuador, to strengthen the management of marine protected areas of the territorial seas. This includes management and conservation areas for strategic species, and offering economic alternatives to local communities, to ensure the sustainability of marine-coastal resources and local communities. Coral reef rehabilitation and recovery of fish stocks are part of their programme.

International Conservation Ecuador has been working for 20 years for the conservation of natural ecosystems and services to ensure the human well-being of current and future generations. Their marine programmes include protection of the ocean while innovating new ways to sustain marine fisheries. Together with the Ministry of the Environment and Water in Ecuador, this involves promoting the effective management of marine and coastal protected areas, the conservation of mangroves and the management of coastal fisheries.

CCWA represents more than 100 environmental organisations across Western Australia, acting as an advocate for conservation since 1967, working directly with the government, media, industry, community groups, and political parties to promote a more sustainable WA and to protect our natural environment. This includes the coastline and marine areas, and issues that potentially will impact on the marine life environment, including pollution control, and includes supporting campaigns such as Protect Ningaloo Reef, and creating new National Parks and Marine Sanctuaries.

Conservation Diver supports the conservation of marine resources through various training programs in coral reef research, restoration, and protection. Their slogan is "Training the next generation of marine conservationists". They have training centres in Thailand, Nicaragua, Indonesia and the Azores, Portugal, with several new centres due to open shortly (2022), including in Madagascar and Hawaii.