Biodiversity Heritage Library (BHL)
http://www.biodiversitylibrary.org
FishBase
http://www.fishbase.org/search.php
Integrated Taxonomic Information System (ITIS)
National History Museum (UK) - Polychaetes
http://www.nhm.ac.uk/research-curation/research/projects/taxinfo//index2.html
World Register of Marine Species (WoRMS)
http://www.marinespecies.org/index.php
Diversity and Geographic Disttibuion of Marine Planktonic Copepods
http://copepodes.obs-banyuls.fr/en
Ichthyoplnkton Information System