As of July 2016, the International Union for Conservation of Nature (IUCN) lists 5278 data deficient invertebrate species. 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.
Nemertea Argonemertes stocki
Annelids
Onychophora Mesoperipatus tholloni
Molluscs
There are 1988 mollusc species and 40 mollusc subspecies assessed as data deficient.
Cnidaria There are 166 species in the phylum Cnidaria assessed as data deficient.
Hydrozoa Millepora boschmai Millepora laboreli
Anthozoa There are 164 species in the class Anthozoa assessed as data deficient.
Tube-dwelling anemones Arachnanthus oligopodus
Zoantharia
Actiniaria
Alcyonacea
Scleractinia There are 145 species in the order Scleractinia assessed as data deficient.
Acroporids
Oculinids
Poritids
Mussids
Pectiniids
Siderastreids
Other Scleractinia species
Arthropods
There are 2875 arthropod species and 17 arthropod subspecies assessed as data deficient.
Echinoderms There are 244 echinoderm species assessed as data deficient.
Sea cucumbers
See also Lists of IUCN Red List data deficient species List of least concern invertebrates List of near threatened invertebrates List of vulnerable invertebrates List of endangered invertebrates List of critically endangered invertebrates List of recently extinct invertebrates
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