American Zoo and Aquarium Association http://www.aza.org/
World Database of Marine Species http://www.seadb.univpm.it/index.php
American Fisheries Society http://www.fisheries.org
FishBase- Fish information website http://www.fishbase.org/home.htm
US Fish and Wildlife Service http://www.fws.gov/
TX Parks and Wildlife http://www.tpwd.state.tx.us/
ICUN http://www.iucn.org/
CITES http://www.cites.org/index.html
The Seahorse Trust http://www.theseahorsetrust.co.uk/
Project Seahorse http://seahorse.fisheries.ubc.ca/
National Marine Fisheries http://www.nmfs.noaa.gov/
N.A. Native Fishes Assoc http://www.nanfa.org/
Catfish ID website http://www.planetcatfish.com
Desert Fishes Council http://www.desertfishes.org/index.html
Madagascar Endangered Fishes http://www.madagascarfish.org/
Sea anemones and their allies http://hercules.kgs.ku.edu/hexacoral/anemone2/index.cfm
Jellyfish http://thescyphozoan.ucmerced.edu/
The Sea Slug forum http://www.seaslugforum.net/
Serpent Seastar http://home.att.net/~ophiuroid/html/main.html
Shrimp and Crabs http://www.planetinverts.com/
Shrimp and Crabs http://www.shrimpcrabsandcrayfish.co.uk/Shrimp.htm?Caridina.htm~mainFrame
Freshwater Jellyfish http://www.jellyfish.iup.edu/
Central Pacific database of Crustaceans http://decapoda.ecole-navale.fr/index.php
Sea Shells http://www.gastropods.com/index.html
Bioluminescence http://www.lifesci.ucsb.edu/~biolum/
Sea Snakes http://homes.jcu.edu.au/~sci-bhl/index.htm
Sea Snakes http://www.fieldmuseum.org/aquaticsnakes/true_sea.html
Australian Venom Research Unit http://www.avru.org/index.html
Soft Corals http://www.ucmp.berkeley.edu/cnidaria/octocorallia.html
Coralline Algae http://www.botany.uwc.ac.za/clines/default.htm
Australia Institute of Marine Science http://www.aims.gov.au/index.html
NOAA Coral Health website http://www.coral.noaa.gov/lists/
CRC Reef http://www.reef.crc.org.au/about/index.html
Flower Gardens Banks http://flowergarden.noaa.gov/welcome.html
Marine Biota of Tropical America http://porites.geology.uiowa.edu/index.htm
SECORE http://www.secore.org/
Sea Turtle http://www.seaturtle.org/
Wider Caribbean Seat Turtle Conservation http://www.widecast.org/#top
Sharks and Sawfish http://www.flmnh.ufl.edu/fish/
Shark Specialist Group http://www.flmnh.ufl.edu/fish/organizations/ssg/ssg.htm
Cephalopoda http://tolweb.org/tree?group=Cephalopoda&contgroup=Mollusca
Cephbase http://www.cephbase.utmb.edu/
Cephalopod Page http://www.thecephalopodpage.org/
The Octopus Magazine online http://www.tonmo.com/
Texas Prohibited Species http://www.tpwd.state.tx.us/huntwild/wild/species/exotic/
Non-native Species Watch list http://nis.gsmfc.org/nis_links_subject.php
National Invasive Species http://www.invasivespeciesinfo.gov/
Invasive species website http://nis.gsmfc.org
Global Invasive Species http://www.issg.org/database/welcome/