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Links

The number of sites devoted to the study and appreciation of sea slugs seems to grow exponentially. So, it's impossible to include them all. However, in the following list we've attempted to provide links to most of those that offer major galleries of photos and/or extensive information. Please let us know if we've made errors, particularly for the non-English sites (we're not sure about the authors or titles in some cases due to the problematic nature of Google translations...).

For sites that deal with broader topics, we've usually included links to both the home page and the opisthobranch section as a convenience. Also, sites that deal with a broader geographic area aren't repeated under each of the subdivisions of that region.

Internal links to the major regions are provided at the left for the convenience of the user.

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World

    Anthony's Nudibranchs by Anthony Holley
    Bibliographia Nudibranchia by Gary McDonald
    Color Patterns in Nudibranchs by Terry Gosliner
    Hardy's Internet Guide to Marine Gastropods  by Eddie Hardy
    Mediterranean Opisthobranchs (with world links) by Erwin Koehler
    Marine Flatworms of the World by Wolfgang Seifarth (opisthobranchs)
    Nembro by Marina Poddubetskaia
    Nudibranch Systematic Index by Gary McDonald
    Nudi Pixel by Erwin Kodiat, Yuji Law & Hengky Dotulong
    Opisthobrranchia Online by Lifedesks
    Pelagic Molluscs by S. van der Spoel, L. J. Newman & K. W. Estep (on-line version)
    Phylogeny of Nudibranchia by CAS
    Sea Slug Forum by Bill Rudman
    Sea Slug Newsletter by Steve Long
    Shark Cage by Gordon Smith (opisthobranchs)
    Slug Site by Michael D. Miller
    Umiushi-zukan by K. Akasaka
    Vibrant Sea by Jeffrey Rosenfeld (opisthobranchs)
    World Nudibranchs by Frédéric Tenvinan
    World Nudibranchs by Natasja Vandeperre (opisthobranchs)
    Worldwide Food Habits of Nudibranchs by Gary McDonald

Atlantic

North Atlantic


    Nudibranchs of  Norway by Frank Emil Moen and Erling Svensen
    Nudibranchs of the British Isles by Bernard Picton
    Opisthobranchs from the Azores by Peter Wirtz
    Opisthobranchs from the Canary Islands by Peter Wirtz
    Opisthobranchs from the Cape Verde Islands by Peter Wirtz
    Scottish Nudibranchs by Jim Anderson
    Sea and Coastline (opisthobranchs)

Caribbean

    Jaxonville Shells by Bill Frank (opisthobranchs)
    Mollusks of the Caribbean Coast of Costa Rica by Julio Magaña & Jesús Ortea (opisthobranchs)
 
Mediterranean

    Atlas of Exotic Molluscs in the Mediterranean by CIESM
    Conchiglie del Mediterraneo by Guido & Marco Arduino (opisthobranchs)
    Mare Nostrum by Miquel Pontes (opisthobranchs)
    Nudibranchs of Numana
    Opisthobranchs of the Coast of Granada by Luis Sánchez Tocino
    Opisthobranchs of the Eastern Mediterranean by Ant Turkmen

South Atlantic

Indo-Pacific

Hawaii

    Fishpics Hawaii by Keoki and Yuko Stender (opisthobranchs)
    Hawaiian Nudibranchs and Flatworms by Edward and Laura Blackshaw
    Hawaiian Sea Slugs by Scott Johnson
    Hawaii's Fishes by John Hoover (opisthobranchs)
    My Hawaiian Images by James Petruzzi (opisthobranchs)
    Sea Life Images by Jerry Kane (opisthobranchs)
    Underwater Imaging by Cynthia Hankins (opisthobranchs)

Japan

    Coral Country by Poe-poe (opisthobranchs)
    Creatures of Awazi Island (opisthobranchs)
    Croissant Island, Okinawa (opisthobranchs)
    Float Island Umiushi by Sunset Resort
    Hachijo Jima Opisthobranchia by Eregulus
    Izu Umiushi by Izuzuki Diver (opisthobranchs)
    Japanese Nudibranchs by Shigeki Ikegami
    Japanese Opisthobranchs by Stephen Wong
    Japanese Opisthobranchs by Takako Uno
    Japanese Shells by Zaimokuza (opisthobranchs)
    Light and Dark by Yukinobu Adachi (opisthobranchs)
    Masea by Ayumi Murakami (opisthobranchs
    Native Sea by Amami & Jun Imamoto (opisthobranchs)
    Okinawa Slug Site by Robert Boland
    Opisthobranchs of the Kii peninsula by Yasuhiro Shirai
    Sea Fishes and Inveretebrates Guide to Zamani Island by Ono Nyi Nyi (opisthobranchs)
    Sea Slug of the Japan Sea Coasts of Middle Japan by Takaoka Biological Club (opisthobranchs)
    The Sea Slug Watchers by Toshi Horiuchi
    Ukishima Nudibranchs by N. and Y. Friend (opisthobranchs)
    Umiushi by Jun Imamoto
    ViaMare (Yomitan, Okinawa) by A. Anno

Central Pacific

    Kwajalein Underwater by Scott and Jeanette Johnson

Western Pacific

    Bali Nudibranchs by Wolfgang Krutz
    Blue Ring by Leon Altoff and Audrey Falconer (opisthobranchs)
    Chinese Opisthobranchs by James Chan
    Dive Oz by Wayne Ellis (opisthobranchs)
    Dive Rosa by Rokus Groeneveld & Sanne Reijs (opisthobranchs)
    Guam Marine Life by Dave Burdick (opisthobranchs)
    Julian Rocks, Australia by Lynda Clarke (opisthobranchs)
    Malaysian Slug Site by Sharif Forbes
    Marine Conservation Cambodia (opisthobranchs)
    Marine Research at Museum Victoria (opisthobranchs)
    Microseashell (opisthobranchs)
    Ningaloo Reef Slugs by Kristin Anderson
    Nudibranch Field Guide by Downbelow UK
    Nudibranchs by Roberto Sozzani
    Nudibranchs by Sergey Parinov (opisthobranchs)
    Nudibranchs of  New Caledonia by Jean-François Herve (opisthobranchs)
    Nudibranchs of the Philippine Islands by Jeffrey Jeffords
    Nudibranchs of the Sunshine Coast, Australia by Gary Cobb and David Mullins
    Philippine Sea Slugs by Erwin Koehler
    Philippine Sea Slugs by Guido Poppe
    Philippine Sea Slugs by Jim Anderson
    Sea Slugs in Saipan by Hiramushi
    Sea Slugs of the Tweed-Byron Coast, Australia by Denis Riek
    Singapore Nudibranchs by Uma Sachidhanandam (opisthobranchs)
    Starfish by Teresa Zubi (opisthobranchs)
    Sulawesi Sea Slugs by Jim Anderson (opisthobranchs)
    Underwater Critters by Christian Knost (opisthobranchs)
    Underwater Photo Gallery by David Harasti (opisthobranchs)
  
New Zealand

    New Zealand Molluscs by Andrew Spurgeon
    New Zealand Nudibranchs by Ian Skipworth (opisthobranchs)
    Nudibranchs of the Poor Knights Islands by Gareth Jones

Indian Ocean

  
  Maldive Sea Slugs by Jim Anderson (opisthobranchs)
    Reunion Island Mollusks by Philibert Bidgrain (opisthobranchs)

Red Sea

   
Eilat Underwater by Binyamin and Shulamit Koretz (opisthobranchs)
    Invertebrates of the Gulf of Eilat by Jacob Dafni (opisthobranchs)
    Opisthobranchs of the Red Sea by Oren Lederman

Eastern Pacific

North America

   
  British Columbia Creature Page by Kerry L. Werry
     Intertidal Invertebrates of the Monterey Bay Area, California by Gary McDonald (opisthobranchs)
     La Jolla Shores Nudibranchs by Steve Gardner
     Metridium Fields by Clinton Bauder
     Morro Bay Underwater by Ken Bondy and Gary Powell (opisthobranchs)
     Ocean Light by Philip Cola (opisthobranchs)
     Opisthobranchs of San Francisco Bay by California Academy of Sciences
     SlugJunkie by Ken
     The Jellies Zone by David Wrobel (opisthobranchs)

Central America

     Sea Slugs of the Pacific Coast of Costa Rica by Yolanda Camacho & Angel Valdes (opisthobranchs)

South America

Other

   
Underwater Field Guide to Ross Island & McMurdo Sound, Antarctica by Peter Brueggeman (opisthobranchs)
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