Taxonomy databases
For fish the Fishbasefor Algae the Algaebase
for sponges the World Porifera Database
for hexacorals the Hexacorallians of the world, etc.
For general checking, WORMS (World Register of Marine Species) where you can validate the species name and be able to identify synonyms.
Each taxa as an expert associated to it and you can also
know or contact them.
Regarding sequences I would recommend you BOLD Systems (
http://www.barcodinglife.com/)
that associates the morphological characters of specimens and photos with the
genetic data. It also imports from and exports data to Genbank.
However you should have into account that the original
description of each species should be checked. The Biodiversity Library has a
lot of ancient literature.


