Marine invertebrates are a motley pack of ocean-dwelling creatures that in fact share little in common beyond a lack of a backbone (vertebral column). They are not a “natural”, monophyletic group in the sense that they do not represent a group of all organisms sharing a common ancestor. Some estimates put the number of marine invertebrate species in the world at 180,000, excluding protists and bacteria (Briggs, J.C. 1994, Systematic Biology).
Most research on marine invertebrates at the IINH is related to the Benthic Invertebrates of Icelandic Waters (BIOICE) project.
IINH Contact: Guðmundur Guðmundsson