Taxonomic Links
 
Systematic and Taxonomic Websites
 

Description Language for Taxonomy (DELTA): a method for encoding taxonomic descriptions for computer processing that an be used to produce natural-language descriptions, conventional or interactive keys, cladistic or phenetic classifications, and information-retrieval systems.
Integrated Taxonomic Information System (ITIS) Taxonomic information on plants, animals, fungi, and microbes of North America and the world.
ION - Index to Organism Names
NCBI - National Center for Biotechnology Information (a taxonomy browser for genetic information on malocostracan crustaceans)
Zootaxa - an online journal that publishes papers on animal taxonomy
National Science Foundation (NSF): Directorate for Biological
Sciences – Systematic and Population Biology

Southern California Association of Marine Invertebrate Taxonomists (SCAMIT) Homepage
National Benthic Inventory - National Benthic Specimen Collection
Hennig Society
Systematics Association

Museum Websites
  Natural History Museum of the UK (NHM): Checklists of UK species
National Museum of Natural History (NMNH): Systematic Biology
National Museum of Natural History (NMNH): Invertebrate Zoology
American Museum of Natural History (AMNH) Center for Biodiversity and Conservation
Natural History Museum of Los Angeles County
Biodiversity and Bioinformatics Websites
 

An Essay on Biodiversity and Taxonomy by F. Boero
Census of Marine Life
Global Biodiversity Information Facility (GBIF) - provides rapid and free primary data about biodiversity to the global scientific community;
National Center for Biotechnology Information (NCBI): Taxonomy Homepage
Tree of Life Web Project (TOL)
Species 2000

Centre for Marine Biodiversity (focus on northwest Atlantic)
OBIS - Ocean Biogeographic Information System - a database of global marine animal and plant distributions
Biodiversity Heritage Library - provides access to historical or obscure taxonomic literature

Taxon Specific Websites
 

Polychaetes of Chesapeake Bay and coastal Virginia
Ceph Base
The Crustacean Society (TCS)
FishBase
Octocoral Research Center - California Academy of Science's website for octocoral taxonomy
Tanaidacean Homepage
World List of Isopods
Echinoderms of the South Carolina Continental Shelf
Sea Slug Forum

Miscellaneous
 

- Benthic fauna of Gray's Reef National Marine Sanctuary (located in the South Atlantic Bight)

Classification of Recent Crustacea (from An Updated Classification of the Recent Crustacea, Martin & Davis, 2001)