As of July 2016, the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of nat ...

(IUCN) lists 1105

near threatened A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify f ...

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

species. 6.1% of all evaluated invertebrate species are listed as near threatened. The IUCN also lists 15 invertebrate subspecies as near threatened. No subpopulations of invertebrates have been evaluated by the IUCN. This is a complete list of near threatened invertebrate species and subspecies as evaluated by the IUCN.

Molluscs Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estim ...

There are 535 mollusc species and nine mollusc subspecies assessed as near threatened.

Gastropods The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. The ...

There are 477 gastropod species and four gastropod subspecies assessed as near threatened.

Stylommatophora

Stylommatophora includes the majority of land snails and slugs. There are 250 species and four subspecies in the order Stylommatophora assessed as near threatened.

= Zonitids

= Clausiliids

= Species Subspecies *'' Alopia bielzii clathrata'' *'' Macrogastra lineolata euzieriana''

= Helminthoglyptids

= Camaenids

= Species Subspecies *'' Glyptorhagada wilkawillina umbilicata''

= Vertiginids

= Cochlicellids

= Trissexodontids

= Helicids

= Hygromiids

= Species Subspecies *'' Xerocrassa montserratensis betulonensis''

= Vitrinids

= Chondrinids

= Enids

= Argnids

=Other Stylommatophora species

Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails (marine species), but also including some freshwater snails ( aquatic species) and land snails ( terrestrial species).Bouchet P. & Rocroi J.-P. (Ed.); Frý ...

There are 115 species in the order Littorinimorpha assessed as near threatened.

= Hydrobiids

= Bithyniids

= Moitessieriids

= Assimineids

= *'' Omphalotropis circumlineata'' *'' Omphalotropis zelriolata''

= Pomatiopsids

= Stenothyrids

= *'' Stenothyra khongi'' *'' Stenothyra wykoffi''

Sorbeoconcha

Architaenioglossa

There are 41 species in the order Architaenioglossa assessed as near threatened.

= Pupinids

= *'' Pupina coxeni'' *'' Pupina pfeifferi''

= Diplommatinids

= Aciculids

= Viviparids

= Ampullariids

= Craspedopomatids

= *'' Craspedopoma hespericum'' *'' Craspedopoma monizianum''

Lower Heterobranchia Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly evolved sea slugs and sea snails, ( marine gastropod mollusks) within the subclass Heterobranchia. WoRMS (2020). "Lower Heterobranchia". Accessed at ...
species

*'' Valvata rhabdota'' *'' Valvata stenotrema''

Cycloneritimorpha

Hygrophila species

Neogastropoda

There are 29 species in the order Neogastropoda assessed as near threatened.

= Buccinids

= *'' Ranella olearia'' *'' Ranella parthenopaeum''

= Muricids

= *'' Latiaxis babelis''

= Conids

Bivalvia Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, biva ...

There are 57 species and five subspecies in the class Bivalvia assessed as near threatened.

Unionida Unionida is a monophyletic order of freshwater mussels, aquatic bivalve molluscs.Bieler R., Carter J.G. & Coan E.V. (2010). ''Classification of Bivalve families''. pp. 113–133, in: Bouchet P. & Rocroi J.-P. (2010), ''Nomenclator of Bivalve Fa ...

There are 49 species and five subspecies in the order Unionoida assessed as near threatened.

= Unionids

= Species Subspecies

= Hyriids

= * Southern river mussel ''(Hyridella narracanensis)'' * South Esk freshwater mussel ''(Velesunio moretonicus)''

Cardiida

Venerida Venerida (formerly Veneroida) is an order of mostly saltwater but also some freshwater bivalve molluscs. This order includes many familiar groups such as many clams that are valued for food and a number of freshwater bivalves. Since the 2000s, t ...

Cephalopods

* Giant Australian cuttlefish ''(Sepia apama)''

Cnidaria Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that ...

There are 176 species in the phylum Cnidaria assessed as near threatened.

Hydrozoa Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialize ...

*'' Millepora murrayi''

Anthozoa

There are 175 species in the class Anthozoa assessed as near threatened.

Alcyonacea Alcyonacea, or soft corals, are an order of corals. In addition to the fleshy soft corals, the order Alcyonacea now contains all species previously known as "gorgonian corals", that produce a more or less hard skeleton, though quite different f ...

* Organ pipe coral ''(Tubipora musica)''

Scleractinia Scleractinia, also called stony corals or hard corals, are marine animals in the phylum Cnidaria that build themselves a hard skeleton. The individual animals are known as polyps and have a cylindrical body crowned by an oral disc in which a ...

There are 174 species in the order Scleractinia assessed as near threatened.

= Euphyllids

= Acroporids

= Poritids

= Brain corals

= Pocilloporids

= Mussids

= Pectiniids

= Siderastreids

= Agariciids

= Fungiids

=Other Scleractinia species

Arthropods Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...

There are 390 arthropod species and six arthropod subspecies assessed as near threatened.

Arachnids Arachnida () is a Class (biology), class of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, opiliones, harvestmen, Solifugae, came ...

Branchiopoda Branchiopoda is a class of crustaceans. It comprises fairy shrimp, clam shrimp, Diplostraca (or Cladocera), Notostraca and the Devonian ''Lepidocaris''. They are mostly small, freshwater animals that feed on plankton and detritus. Description M ...

* Mono Lake brine shrimp ''(Artemia monica)'' * California linderiella ''(Linderiella occidentalis)''

Entognatha The Entognatha are a class (biology), class of wingless and Ametabolism, ametabolous arthropods, which, together with the insects, makes up the subphylum Hexapoda. Their Arthropod mouthparts, mouthparts are entognathous, meaning that they are r ...

*'' Blasconura batai'' *'' Lepidonella lecongkieti''

Maxillopoda Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can ...

Malacostracans

Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 71 malacostracan species and six malacostracan subspecies assessed as near threatened.

Decapods The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is estim ...

There are 71 decapod species and six decapod subspecies assessed as near threatened.

= Parastacids

= Gecarcinucids

= Atyids