As a collaborative research and conservation project, MWSP studies and protects whale sharks, while empowering local communities in Nosy Be, Madagascar. The scientific objective is to establish the occurrence, residency and population of the whale sharks in the area. The core elements of MWSPs research include monitoring the presence of whale sharks, as well as conducting in-water behavioural surveys and tourist compliance surveys in the area. MWSP also works closely with the local community by conducting capacity building activities and encouraging sustainable practices. Data is collected via a variety of methods, including free diving. Volunteers assist in this operation.

The Maldives Whale Shark Research Programme exists to facilitate whale shark research projects and to foster community focused conservation initiatives within the Maldives and throughout the Indian Ocean.

The Manta Trust was formed in 2011 to co-ordinate global research and conservation efforts for manta rays, their close relatives and their habitat. The Trust brings together a number of projects from around the globe, both new and long-standing, including the Republic of Maldives, Sri Lanka, Mexico and Indonesia. They conduct studies into manta populations in these locations, thus providing the information needed by Governments, NGO’s and conservationists can make decisions to ensure the long term survival of these animals and their habitat.

Mar Sustentable is a marine conservation organization focused on scientific research and education. Their scientific mission is to collect 'data on coastal exploitation and socioecological systems to integrate the ecological, social, archaeological, and physical dimensions of coastal environments', while their environmental education mission is aimed at creating awareness in order that individuals and communities make changes for a healthier “planet ocean”.

MarAlliance is an international non-governmental organization that ‘designs and conducts collaborative grassroots research and conservation action on threatened marine megafauna such as sharks, rays, turtles and large finfish. Working with fishers and other key stakeholders of the sea, (they) generate essential data on megafauna populations, behaviour and ecology to enable fact-based conservation and management’. The organization supports the creation and expansion of marine protected areas and legislation that enables sustainable fisheries to minimize threats and maximize protection of sharks and rays. MarAlliance is registered in the US (California) and locally in Belize, Panama and Cabo Verde. They work remotely from multiple bases in the US, Belize, Honduras, Panama, Cabo Verde and Micronesia.

Set up by Marine Biological Association of the UK, MarLIN is a resource which provides information for marine conservation, management, protection and planning, a centre of excellence in spatially based and time-series marine biological information and for good stewardship in the marine environment. The resources are based on available scientific evidence and designed for all stakeholders, from government agencies and industry to naturalists and the public. MarLIN hosts the largest review of the effects of human activities and natural events on marine species and habitats yet undertaken.

An environmental research and conservation organization, MareTerra studies the natural life around Sardinia. This includes monitoring populations (in particular dolphins) to assess the impact of human activity on their conservation status. Most of their present research and monitoring programs are carried out between the northernmost point of the island and the southern coast of the small town of Bosa. 'Part of this area is protected by national and international laws for its remarkable naturalistic and geological relevance'. Education and guiding eco-tourism within the area is an important part of their mission.

Marevivo is a significant Italian environmental association that protects the sea and its resources, focusing in particular on biodiversity conservation, sustainable development, enhancement and promotion of marine protected areas, combatting pollution and illegal fishing. They promote education in schools and universities, and act as an advocate influencing law and policy with many successful campaigns in Italy, such as recently the ban of microplastics in rinse-off cosmetics and the ban on sea cucumber fishing. Marevivo relies on the work of hundreds of volunteers and thousands of members scattered all over Italy, with representation throughout the country in the form of delegations in more than 25 centres. They are organised into diving, sailing, canoe & kayak, beaches and shore divisions.

The Marine Biological Association of the United Kingdom is a learned society with a scientific laboratory that undertakes research in marine biology. The organisation was founded in 1884 and has been based in Plymouth since the Citadel Hill Laboratory was opened on 30 June 1888. Amongst its projects is the MarLIN project

Marine Conservation Cambodia is a fully licensed research facility specializing in seahorse research in Cambodia, as well as research into the surrounding reefs and benthic areas. Based on Koh Ach Seh in Kep Province.

Marine Conservation Institute is a non-profit scientific and conservation advocacy organization that has been working since 1996 to promote cooperation essential to protecting and restoring the Earth's biological diversity. From the headquarters in Seattle WA and the Washington DC and California offices, they work to protect marine life around the United States and beyond by encouraging research and training in marine conservation biology, bringing scientists together to examine crucial marine conservation issues, conducting policy research to frame the marine conservation agenda, leading outreach efforts to educate scientists, the public and decision makers on key issues, and building partnerships to solve problems affecting marine life and people.

The Marine Institute (Foras na Mara) is the Irish national agency responsible for Marine Research, Technology Development and Innovation (RTDI)