BandaSEA eV is a non-profit association based in Bonn. Their goal is to protect the underwater world of the Banda Sea in Indonesia by working with the local population of the Banda Islands to find solutions to problems such as plastic waste and overfishing. The area has extremely rich marine life, including superb coral reefs. Since 2012, the main focus of BandSea has been on preventing plastic waste from threatening these sensitive ecosystems. At the same time, they work with local organizations in support of the establishment of marine protected areas in the area.

The Barbados Sea Turtle Project is based at UWI Cave Hill, and has been involved in sea turtle conservation in for over 25 years. This project tasks itself with monitoring nesting beaches, rescue and rehabilitation, in water monitoring and is run by the University of the West Indies, a part of the WIDECAST: Wider Caribbean Sea Turtle Network. The focus is on conservation, research and public outreach and education.

Barefoot Conservation is a not-for-profit organisation that runs marine conservation and community based volunteer projects in Indonesia. Their focus is on grass roots conservation and community action, with the aim of engaging, educating and empowering the local community 'to make sustainable conservation a way of life, not just a project'. Their programme includes coral reef monitoring, Manta Ray research, and the elimination of Crown of Thorns starfish which are destroying coral reefs. Their main project is on the island of Arborek in Raja Ampat Regency, in the West Papua province of Indonesia.

BICA was founded to initiate and coordinate efforts for the protection of the fragile natural resources of the islands. To operate the organization has been divided into three chapters strategically located in each of the Islands, Utila, Roatan and Guanaja. The focus of their work is on environmental education, community development, protection and research & monitoring, and works with local authorities on the management of marine and terrestrial protected areas in the Bay Islands of Honduras. Amongst their many activities are included coral restoration, park patrols, marine water quality monitoring, monitoring of reef fish larvae, and protection of mangroves and seagrass.

Part of the ongoing Dugong and Seagrass Conservation Project, whereby the capacity of coastal communities is built to implement sustainable livelihoods and conserve dugongs and seagrass, in this instance in Bazaruto Archipelago Region, Mozambique. This project will last from 2021-2024

Be Whale Wise is a partnership of governmental agencies such as NOAA, non-profits and other stakeholders in the Salish Sea with the purpose to research, implement and educate best vessel practices to protect the unique and fragile marine resources found in the area. The Salish Sea is part of the Pacific Ocean, and is located in both British Columbia in Canada and Washington State in the USA. Be Whale Wise informs the public on the laws pertaining to marine mammals, as well as provides additional guidelines that will make boating safer for the environment. Violations can be reported directly to them.

Beneath the Waves is a global NGO working on several initiatives, including the establishment of Marine Protected Areas (mainly Caribbean islands), conservation of sharks and the habitats they occupy, deep sea research, and Blue Carbon ecosystems. They work in many locations and oceans, including the Caribbean, the North Atlantic, and the Pacific.

The Bermuda Turtle Project, a cooperative research and education program by the Bermuda Aquarium, Museum and Zoo, and the Sea Turtle Conservancy. The research efforts of the Bermuda Turtle Project are focused on filling in the information gaps on green turtle biology so that successful protection may be given to these fascinating, vanishing animals. Bermuda is one of a number of locations worldwide where post-pelagic, immature green turtles occur in the complete absence of adults, thus providing scientists and resource managers with a unique opportunity to study the little understood juvenile stage of the green turtle.

Beyond the Surface's mission is to 'build social-ecological resilience through surfing, storytelling, and mindfulness workshops.' The organisation works in several locations around the world, promoting the ocean. For example, in Peru their aim is to support marginalized artisanal fishing communities, starting with local young people, by hosting workshops in schools and fishing villages along Peru's coast to promote ocean literacy and policy engagement, and share scientific information. BTSI has run/runs programmes in Africa (Morocco, South Africa), Asia (Vietnam, Indonesia), Central America and South America (Peru).

Big Blue Conservation aims to protect the Koh Tao ecosystem in Thailand, and to inspire and build a global team of conservationists through education. As a marine conservation school, they actively contribute to pioneering marine research, with ongoing field research like diver-related reef damage, the impact of discarded nets on the reefs, and the recovery of corals from mass bleaching events. With a team dedicated to such scientific research, they work at formulating the policies and guidelines required to protect coral reefs for the future.

Big Blue Ocean Cleanup is focused on cleaning beaches and the oceans, protecting wildlife, ocean research and innovative technologies development. Working across the globe, they help keep the oceans clean with cleanups, create educational resources for schools, send out cleanup equipment to community groups, research ocean pollution and raise awareness for clean oceans.

The Big Seaweed Search first launched in 2009 under the auspices of the Marine Conservation Society and the Natural History Museum in the UK. Hundreds of people have taken part and the data gathered, alongside other research, show that the distribution of seaweeds around the UK is changing. The survey supports research on ‘three key environmental issues: rising sea temperature, the arrival and spread of non-native species of seaweeds, ocean acidification (the sea becoming more acidic because of absorbing carbon dioxide from the air.’ The website provides information about how to become involved in this citizen science project.