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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
    Doris by Muséum national d'Histoire naturelle
    Hardy's Internet Guide to Marine Gastropods  by Eddie Hardy
    Kevin Lee's Images by Kevin Lee
    Mediterranean Opisthobranchs (with world links) by Erwin Koehler
    Marine Flatworms of the World by Wolfgang Seifarth (opisthobranchs)
    Nembro by Marina Poddubetskaia
    Nudibranchs by Jim Anderson
    Nudibranchs by Marli Wakeling
    Nudibranch Systematic Index by Gary McDonald
    Nudi Pixel by Erwin Kodiat, Yuji Law & Hengky Dotulong
    Opisthobrranchia Online by Lifedesks
    Opisthobranchs by Ali Hermosillo
    Pelagic Molluscs by S. van der Spoel, L. J. Newman & K. W. Estep (on-line version)
    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 Registry of Marine Species
    Worldwide Food Habits of Nudibranchs by Gary McDonald

Atlantic

North Atlantic


    Canadian opisthobranchs by Yann Querrec (opisthobranchs)
    Club Immersió Biologia by University of Barcelona (opisthobranchs)
    Grup de Recerca d'Opistobranquis de Catalunya by Research Group of Catalonia opisthobranchs (opisthobranchs)
    Hypselodoris by João Pedro Silva
    Nudibranchs of  Norway by Frank Emil Moen & 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)
    Opisthobranchs of the Coast of Granada by Luis Sánchez Tocino
    Opisthobranchs of the Eastern Mediterranean by Ant Turkmen
    OPK Opistobranquis by Miquel Pontes, Enric Madrenas & Manuel Ballesteros

South Atlantic

Indo-Pacific

Hawaii

    David Rafalovich Photography by David Rafalovich (opisthobranchs)
    David Rolla's Photos by David Rolla
    Fishpics Hawaii by Keoki and Yuko Stender (opisthobranchs)
    Hawaiian Marine Life (opisthobranchs)
    Hawaiian Nudibranchs and Flatworms by Edward & Laura Blackshaw
    Hawaiian Sea Slugs by Scott Johnson
    Hawaii's Fishes by John Hoover (opisthobranchs)
    HURL Deep-sea Animals (opisthobranchs)
    Joe Weston Photography by Joe Weston (opisthobranchs)
    J. Lambus Photography by Joshua Lambus (opisthobranchs)
    My Hawaiian Images by James Petruzzi (opisthobranchs)
    Nudibranchs by Paul Okumura
    Sea Life Images by Jerry Kane (opisthobranchs)
    The Odyssey of Dai Mar by Dai Mar Tamarack & Heidi Miller (opisthobranchs)
    Underwater Imaging by Cynthia Hankins (opisthobranchs)

Japan

    Creatures of Awazi Island (opisthobranchs)
    Croissant Island, Okinawa (opisthobranchs)
    Float Island Umiushi by Sunset Resort
    Izu Umiushi by Izuzuki Diver (opisthobranchs)
    Japanese Nudibranchs by Shigeki Ikegami
    Japanese Shells by Zaimokuza (opisthobranchs)
    Light and Dark by Yukinobu Adachi (opisthobranchs)
    Masea by Ayumi Murakami (opisthobranchs)
    Okinawa Fish (opisthobranchs)
    Okinawa Nature Photography by Shawn Miller (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)
    Sea Slug World by Ocean Blue
    The Sea Slug Watchers by Toshi Horiuchi (opisthobranchs)
    Ukishima Nudibranchs by N.& Y. Friend
    Umiushi by Jun Imamoto
   
Central Pacific

    Kwajalein Underwater by Scott & Jeanette Johnson

Western Pacific

    Amateur Branching by Patrik Good (opisthobranchs)
    Blue Ring by Leon Altoff & Audrey Falconer (opisthobranchs)
    Dive Rosa by Rokus Groeneveld & Sanne Reijs (opisthobranchs)
    Guam Marine Life by Dave Burdick (opisthobranchs)
    Julian Rocks, Australia by Lynda Clarke (opisthobranchs)
    Marine Research at Museum Victoria (opisthobranchs)
    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 & David Mullins
    Philippine Sea Slugs by Erwin Koehler
    Philippine Sea Slugs by Guido Poppe
    Port Philip Marine Life by Museum Victoria  (opisthobranchs)
    Sea Slugs in Saipan by Hiramushi
    Sea Slugs of the Tweed-Byron Coast, Australia by Denis Riek (opisthobranchs
    Singapore Nudibranchs by Uma Sachidhanandam (opisthobranchs)
    Starfish by Teresa Zubi (opisthobranchs)
    Underwater Critters by Christian Knost (opisthobranchs)
    Underwater Photo Gallery by David Harasti (opisthobranchs)
    Wet Image Photography by Phil Woodhead (opisthobranchs)

South Pacific

    TahitiNudi by Pauline Bosserelle & Fabien Michenet
  
New Zealand

    New Zealand Molluscs by Andrew Spurgeon
    New Zealand Nudibranchs by Ian Skipworth (opisthobranchs)
 
Indian Ocean

  
  Reunion Island Mollusks by Philibert Bidgrain (opisthobranchs)
    Sand and Shells by Tim O. Hare

Red Sea

   
Eilat Underwater by Binyamin & 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

     Intertidal Invertebrates of the Monterey Bay Area, California by Gary McDonald
     La Jolla Shores Nudibranchs by Steve Gardner
     Metridium Fields by Clinton Bauder
     Morro Bay Underwater by Ken Bondy & Gary Powell (opisthobranchs)
     Ocean Light by Philip Cola (opisthobranchs)
     Sea Slugs by Jan Kocian
     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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