A general environmental group with a marine campaign, the US-based Environmental Defense Fund (EDF) is known for its work in the area of global warming, ecosystem restoration and oceans. In addition to working with fishing communities to offer transitional and financial support, the organisation's goals include the curbing of overfishing and also begin sustainable fishing models in several countries. EDF has national offices in New York and Washington, and several regional offices in the USA, and also in London in Europe, and in China, Mexico and Indonesia.

The European Environmental Bureau is a network of around 140 environmental citizens' organisations based in more than 30 countries. The EEB is a democratic federation, representing local, national, European and international groups in European Union Member States, plus some accession and neighbouring countries. Among their lines of action, EEB includes issues to do with water and pollution.

Fauna and Flora International aims to change the policy and behaviour that contribute to biodiversity loss by engaging a wide range of governments and non-governmental organizations, and by raising the profile of biodiversity within the wider global development debate. This includes marine biodiversity.

New Zealand's largest national conservation organisation. The Society's mission is to preserve and protect the native plants and animals and natural features of New Zealand. Active on a wide range of conservation and environmental issues. These include the protection of native forests, tussock grasslands, wetlands, coastlines and marine ecosystems, energy and resource conservation, sustainable fisheries and sustainable land management. Also involved in South Pacific rainforest conservation work and is working to ensure the protection of Antarctica from environmental damage.

FNE is a network of more than 3000 associations working for environment protection, including the marine environment. It contributes to the improvement and respect of environmental laws in France and is present in more than 200 consultative and advisory bodies. Works under the auspices of EEB

Friends of the Earth Europe is the largest grassroots environmental network in Europe, uniting more than 30 national organisations with thousands of local groups. Their Brussels office coordinates the network’s joint campaigns, and pushes for action by the EU to protect people and planet. With many European countries with extensive coastlines, there is a strong marine component to the network. Projects in individual countries are included in their websites.

Friends of the Earth (International) (EWNI) is an international membership organisation, with members spread across the world. Its main parent body, Friends of the Earth is primarily an advocacy group, with most of its activities focused in UK. Its advocacy programs focus on environmental issues (including the marine environment), highlighting their social, political and human rights contexts.

GEOTA is an environmental protection group in Portugal. The name translates as Study Group on Spatial Planning and Environment.

Global Choices is a high-profile organization, involving and endorsed by prominent environmentalists, which works to protect our planetary ecosystems. Focusing on the ‘Global Commons’, namely the earth's shared natural resources, such as the high oceans, the atmosphere and outer space and the Antarctic in particular, their stated vision is ‘to achieve consciousness in action that we are one humanity, dependent on the ~Global Commons, the interdependent natural systems crucial to all life.’ Their current mission is to drive action on the Ice Crisis, prioritizing the Arctic and Antarctic Global Commons. The five strategies to achieve their goals are: i. Hands Off the Central Arctic Ice Shield campaign which confront policy makers and industry, ii. an Intergenerational Network ‘Arctic Angels’ or young leaders to raise awareness of issue such as the Ice Crisis, iii. Climate Literacy Education campaign, iv. a Finance element which aims to create instruments to direct funds to protect the Global Common, and v. ‘Humpty Dumpty’ which aims to gather influential female leaders who bring conscious feminine energy to strategically tackle the climate crisis

GCRMN works through a global network to strengthen the provision of best available scientific information on and communication of the status and trends of coral reef ecosystems, for their conservation and management. GCRMN is the world's premier coral reef data network, bringing together a range of government and non-government partners in tracking status and trends of the world's coral reefs. It covers biophysical variables as well as socioeconomic variables, through the 'SocMon' initiative. The main activity is the preparation of regional and global periodic assessments on the status and trends of coral reefs. Established by ICRI, supported by UN.

The Moore Foundation funds programs in a number of fields, including the environment. Their Environmental Conservation Program balances long-term conservation with sustainable use. The program establishes models for collaboration that can be replicated and expanded around the globe, and seeks to create lasting change in how land, freshwater and coastal marine ecosystems are managed.

The Green Peace organization works on several issues in the marine environment, amongst their many various interests. With its vast networks across the world, the organisation urges big corporations to act to reduce their plastic footprint to end the flow of plastic into our oceans. In addition, Green Peace is engaged in addressing unsustainable industrial fishing practices, climate change and ocean acidification. Greenpeace's oceans campaign focusing on three major threats to the world's oceans: overfishing, pirate fishing, whaling, and intensive shrimp aquaculture.