British Seahorse Survey
All about a survey set up to look for and monitor the populations of Seahorses around the British Isles and Ireland.

Marine Conservation Society
Dedicated to protecting the marine environment and its wildlife. Includes a photo gallery, information on campaigns, and details of the different species and habitats, and the threats that they face.

Organisation Cetacea
A cetacean (whale and dolphin) conservation organisation. Includes facts about the whale and dolphin species, downloadable papers, and information for volunteers.

Sea Watch Foundation
A charity working for the conservation of whales and dolphins in the seas around the UK.

The Seahorse Trust
Promotes research into seahorses in the UK and worldwide, as well as education about these fish. There are seahorse facts and details of the organisation's research projects.