Blue Corner Marine Research is a conservation organization specializing in scientific diver training, coral restoration and reef health monitoring. They have established an extensive coral restoration project in the Nusa Pendia Marine Park, where interns and divers can work with the conservation team.

Blue Finance is a UN-backed NGO tasked with improving the management of mPAs via investible initiatives. As a social enterprise managing a federation of Marine Protected Areas, on behalf of a number of governments, they co-manage Marine Protected Areas, thereby protecting marine ecosystems in the Caribbean, SE Asia and Sub-Saharan Africa and developing a Blue Economy for local communities in and around the parks. Blue finance also structures blended finance investment facilities for our projects. They are currently active in Belize, Dominican Republic, Indonesia, Philippines and Zanzibar.

With a network of grassroots individual citizen activists, the Blue Frontier Campaign works towards the improvement of ocean policies in the 23 coastal states of the United States. According to Blue Frontier Campaign, the mission of the initiative is to construct the solution-oriented citizen engagement required to save our ocean, coasts and the communities. The initiative conducts regional meetings, public education campaigns and publishes books to achieve their goal. The campaign was founded by award-winning author and journalist David Helvarg in 2003. Blue Frontier works to support seaweed (marine grassroots) efforts at the local, regional and national level, with an emphasis on bottom up organizing to bring the voice of citizen-activists into national decision-making that will impact our public seas.

The aim of Blue Marine Foundation (BLUE) is 'to combat over-fishing and the destruction of biodiversity – arguably the largest problem facing the world’s oceans – by delivering practical conservation solutions, including the creation of large-scale marine reserves.' This includes sustainable fisheries which will allow fish stocks to recover. Their reach includes the UK, St Helena, Maldives, Aeolian Islands, Ascension Islands, Caspian Sea, Namibia, Patagonia and Tristan da Cunha, amongst others, and includes seagrass revegetation, protection of kelp forests, aquaculture and the blue economy in a drive to protect marine life and the communities dependent on it.

Blue Ocean Gear designs and engineers Smart Buoy technologies that enable near real-time tracking and monitoring of fixed fishing and aquaculture gear, including offshore lines, traps and nets, thus providing a solution in preventing the significant problem of ghost gear. These buoys alert when gear has moved outside intended fishing areas, allowing for quick retrieval. In addition to tracking the location of fishing gear, the buoys collect a variety of oceanographic data. The company is supported by Conservation International Ventures.

Blue Ocean Society works to protect marine animals and their habitats in the Gulf of Maine, through a variety of research and education programs. In their efforts to make facts about the marine life of the Gulf of Maine more accessible to the general public, the Blue Ocean Society regularly gives presentations on marine life to schools and libraries (followed by beach clean-up trips). They have also partnered with a number of reputable whale tour operators in the area to organize wild whale watching tours.

The Blue Prosperity Coalition is a coalition of partners engaging in a multi-year partnership with Governments to designate and implement 30% marine protection and establish a Blue Prosperity Plan. Government officials, ocean experts, and NGOs joined together to announce the creation of the Blue Prosperity Coalition, a network of global partners advancing sustainable oceans by balancing marine protection with economic development. Founding members of the Coalition include the Waitt Institute, National Geographic Pristine Seas, Oceans 5 and Dynamic Planet, as well as government partnerships with the Azores, Barbuda, Curaçao, and the Kingdom of Tonga.

Blue Resources Trust is a marine research and consultancy organisation based in Sri Lanka that aims to promote informed science based decision making to facilitate the sustainable use of marine resources. Their past and current research has focused on coral reefs, fisheries, sustainable livelihoods, marine protected areas, and the development of domestic and international marine policy. They consult in a wide range of marine related fields including field surveys, EIAs, technical advice, and project management. In addition, they facilitate underwater photographers and film crews.

Blue Seas Protection is a marine conservation charity with the multiple missions of addressing climate and environmental issues, political campaigning, education and awareness about marine conservation, and direct action, working at all levels, from global and national Government campaigns, to local "boots on the ground" community projects. Their main activities are aimed at: Combatting overfishing (via advocacy, the Seaspiracy petition, and working with local fisheries), combatting marine pollution (via their Operation Sea Sweep programme and beach cleanups), education and awareness (via their SharkLab programme and outreach), the protection of marine species (including their BSP Marine Mammal Medics for local incidents), and their Marine Crime Watch monitoring and reporting system.

BlueSeeds’ goal is to help marine conservation organizations to meet their financing needs and build a sustainable financial strategy. They focus on marine protected areas. BlueSeeds is a consultancy whose mission is to ensure the financial sustainability of such conservation projects, and maximize their economic, environmental and social impacts. By acting as intermediaries, they connect conservation organizations with the economic world, and develop long term projects.

Blue Ventures works at catalysing and sustaining marine conservation projects led by locals in places where the ocean is vital to local cultures and economies, and are committed to protecting marine biodiversity in ways that benefit coastal people. Based in the UK, they operate in Madagascar, Mozambique, Somalia, Tanzania, Comoros, Kenya, Belize, India, Indonesia, Papua New Guines (PNG), Philippines, Thailand and Timor-Leste. In Madagascar they have created the largest LLMA (Locally Managed Marine Area) in the Indian Ocean. Amongst their many projects, their aquaculture projects include growing seagrass and sea cucumbers. At the same time they offer volunteering opportunities. Blue Ventures is increasingly active in all facets of marine conservation, and highly effective in achieving positive change in local communities.

Blue World was formed with the intention to take over the research and public awareness actions of the Adriatic Dolphin Project (ADP) started in 1987 and managed by the Tethys Research Institute until 2000. Blue World was created in 1999 by ten founders, mostly local but all involved in the ADP during previous years. Presently, Blue World carries out projects including Adriatic Dolphin Project, Losinj Dolphin Reserve, Losinj Marine Education Centre, Research and conservation of marine turtles of the Adriatic in cooperation with the Croatian Natural History Museum. Blue World actively cooperates with a number of organisations and institutions in Croatia and abroad. scientific research and conservation projects and promote environmental awareness in the Losinj-Cres archipelago, Croatia and Adriatic region as a whole.