The Nudibranchs are marine gastropods in which the body is generally uncoiled and the shells have largely been lost or become internal. Some do not crawl like other gastropods but glide through the water by undulations of their extended mantle. They include the sea slugs and sea hares.
Bibliographia Nudibranchia, Gary McDonald
A comprehensive bibliography of the literature about nudibranchs, including textbooks and local field guides.
Jeff's Nudibranch Page
Devoted primarily to the nudibranchs of the Philippines, but also contains information and photographs about crinoids (Echinodermata) and reef organisms in general.
Mediterranean Slug Site
A plethora of photos and information about Opisthobranchs from the Mediterranean Sea. Also includes nudibranchs from parts of the world other than the Mediterranean.
Web-based nudibranchs identification tool using photographs and underpinned by up to date scientific classification.
Photographs and introduction by Phillip Slosberg.
Photographs of Tenellia adspersa and Tritonia plebeia and details of their habitat, life history and range.
Photographs and information provided by the National Geographic.
Nudibranchs and Marine Flatworm of the World
Photos of nudibranchs from the Mediterranean, Indian Ocean, and the Red Sea. Unfortunately (from a certain perspective), there is more information about flatworms on this site than about nudibranchs.
Nudibranchs of Norway
Knowledge of Norwegian suggested for this site.
The Okinawa Slug Site
A site featuring Okinawan Opisthobranch Molluscs, nudibranchs and other related sea slugs such as bubble-shells, sea hares and side-gilled slugs.
Opisthobranchia Around Hachijo Island
Photographs of nudibranchs from the Izu-Islands group of Japan.
Opisthobranchs of Kii Peninsula
The page is in Japanese.
Photos of Indo-Pacific and Red Sea Nudibranchs
A collection of photographs in which information on the camera, film used, and some species specific data are provided with each photo. [Pop-ups].
Deals almost exclusively with this part of the world.
Sea Lemon: Archidoris pseudoargus
Photographs and information on this sea slug from ARKive including classification, status, description, range, habitat, biology, threats and conservation.
Sea Slug Forum
You can ask questions and post information on nudibranchs and other related sea slugs such as bubble-shells, sea hares and side-gilled slugs.
Data available on sites and dates of collection of nudibranchs.
The Slug Site
Devoted to the study of opisthobranch molluscs.
Thecacera pennigera: Winged Thecacera
Photographs and information on this species, including its taxonomy, description, habitat, distribution, life history, population biology, physical tolerances, community ecology and invasion information.
Last update:December 4, 2014 at 17:05:10 UTC