Other
Mollusca
A general description of mollusca and some discussion of those found in the waters of Great Britain.
Other
The Slug Site
Describes Opisthobranch Molluscs, which includes sea slugs. Includes many links to other sites and a wealth of photographs and descriptions of sea slugs contributed by people around the world.
University of California
Nudibranchs: You Are What You Eat
Information about nudibranchs and their diet. Learn more about these sea slugs.
A-Z Animals
A Z Animals: Animal Facts: Sea Slug (Holothuroidea)
Provides photographs and a fact card about the sea slug, also known as the sea cucumber. Discusses where they live, diet, predators, physical features, the different species, reproduction, and their value to humans.