1. Invertebrates - Aquatic environments
2. Man and Mollusc
3. Reef life 
4. ReefBase
5. Shellfish and Invertebrates - Pacific Region

Frumdýr/Protozoa

Flatormur/Platyhelminthes

Hjóldýr/Rotifera

1. Cnidaria HP
2. JellyCam
3. The JelliesZone
4. Woodshole

1. Copepods
2. Crustacea Net
3. Crustacean Soc.
4. Crab of the southern north sea
5. LOBSTER INSTITUTE
6. The lukers guids to stomatopods
7. World List of Marine, Freshwater and Terrestrial Isopod Crustaceans
8. Shrimp Sentinel Online
9. Shellfish and Invertebrates - Pacific Region

1. Links to Annelid Websites
2. Polychaetes
3. Polychaete Researchers Online

1. Check List of European Mar. Mollusca
2. CephBase
3. Cephalopods Webpage
4. EuroSquid
5. Living World of Molluscs
6. Man and Mollusc
7. Opisthobranchs from the Mediterranean Sea and elsewhere
8. Shellfish and Invertebrates - Pacific Region
9. The Cephalopod Page
10. Worldwide Directory of Cephalopod Researchers

1. Echinodermata
2. Echinoids
3. Shellfish and Invertebrates - Pacific Region

Svampdýr/Porifera

1. Porifera WP

Mosdýr/Bryozoa

1. The Bryozoa Home Page

1. Parasites
2. Bernard Picton's homepage