As of July 2016, the International Union for Conservation of Nature (IUCN) lists 5278 data deficient invertebrate species. [1] 29% of all evaluated invertebrate species are listed as data deficient. The IUCN also lists 57 invertebrate subspecies as data deficient.
No subpopulations of invertebrates have been evaluated by the IUCN.
This is a complete list of data deficient invertebrate species and subspecies as evaluated by the IUCN.
There are 1988 mollusc species and 40 mollusc subspecies assessed as data deficient.
There are 166 species in the phylum Cnidaria assessed as data deficient.
There are 164 species in the class Anthozoa assessed as data deficient.
There are 145 species in the order Scleractinia assessed as data deficient.
There are 2875 arthropod species and 17 arthropod subspecies assessed as data deficient.
There are 244 echinoderm species assessed as data deficient.