List of near threatened molluscs facts for kids

In September 2016, the International Union for Conservation of Nature (IUCN) looked at many mollusc species. They found 535 mollusc species that were "near threatened." This means these species are not yet in serious danger, but they might become threatened soon. About 7.4% of all molluscs checked were in this group.

The IUCN also listed nine types of mollusc subspecies as near threatened. A subspecies is like a special group within a species. No smaller groups of molluscs (called subpopulations) have been checked by the IUCN. This article lists the mollusc species and subspecies that are near threatened.

Gastropods: Snails and Slugs

Near threatened (NT) species are not yet critically endangered, endangered, or vulnerable. However, they are likely to become threatened in the near future.

There are 477 species and four subspecies of gastropods that are considered near threatened. Gastropods are a large group of molluscs. They include all snails and slugs.

Stylommatophora: Land Snails and Slugs

The Stylommatophora group includes most land snails and slugs. About 250 species and four subspecies from this group are near threatened.

Zonitids: Glass Snails

Here are some near threatened zonitid snails:

Clausiliids: Door Snails

These are some near threatened clausiliid species:

And these are near threatened subspecies:

• Alopia bielzii clathrata
• Macrogastra lineolata euzieriana

Helminthoglyptids: Shoulderband Snails

Some near threatened helminthoglyptid snails include:

Camaenids: Australian and Asian Snails

Here are some near threatened camaenid species:

And one near threatened subspecies:

• Glyptorhagada wilkawillina umbilicata

Vertiginids: Whorl Snails

These are some near threatened vertiginid snails:

Cochlicellids: Cone Snails

Some near threatened cochlicellid snails include:

Helicids: Common Snails

Here are some near threatened helicid snails:

Hygromiids: Hairy Snails

These are some near threatened hygromiid species:

And one near threatened subspecies:

• Xerocrassa montserratensis betulonensis

Other Near Threatened Land Snails and Slugs

Here are more near threatened species from the Stylommatophora group:

Littorinimorpha: Sea and Freshwater Snails

There are 115 species in the Littorinimorpha group that are near threatened. This group includes many types of sea and freshwater snails.

Hydrobiids: Small Aquatic Snails

Many small aquatic snails called hydrobiids are near threatened:

Bithyniids: Operculate Snails

These are some near threatened bithyniid snails:

Moitessieriids: Cave Snails

Some near threatened moitessieriid snails include:

Pomatiopsids: Freshwater Snails

Here are some near threatened pomatiopsid snails:

Sorbeoconcha: Diverse Snails

This group includes various snails, and these species are near threatened:

Architaenioglossa: Land and Freshwater Snails

There are 41 species in the Architaenioglossa group that are near threatened.

Diplommatinids: Small Land Snails

These small land snails are near threatened:

Aciculids: Needle Snails

Some near threatened aciculid snails include:

Viviparids: River Snails

These river snails are near threatened:

Ampullariids: Apple Snails

Some near threatened apple snails include:

Hygrophila: Freshwater Snails

These freshwater snails from the Hygrophila group are near threatened:

Neogastropoda: Marine Snails

There are 29 species in the Neogastropoda group that are near threatened. These are mostly marine snails.

Conids: Cone Snails

Many cone snails are near threatened:

Bivalvia: Clams and Mussels

There are 57 species and five subspecies of bivalves that are near threatened. Bivalves are molluscs with two shells, like clams and mussels.

Unionida: Freshwater Mussels

There are 49 species and five subspecies in the Unionida group that are near threatened. These are freshwater mussels.

Unionids: River Mussels

Here are some near threatened unionid species:

And these are near threatened subspecies:

Hyriids: Southern Hemisphere Mussels

These mussels from the Southern Hemisphere are near threatened:

• Southern river mussel (Hyridella narracanensis)
• South Esk freshwater mussel (Velesunio moretonicus)

Cardiida: Cockles and Giant Clams

These bivalves are near threatened:

Venerida: Venus Clams and Others

These bivalves are near threatened:

Cephalopods: Cuttlefish

Only one cephalopod species is listed as near threatened:

• Giant Australian cuttlefish (Sepia apama)

See also

• Lists of IUCN Red List near threatened species
• List of least concern molluscs
• List of vulnerable molluscs
• List of endangered molluscs
• List of critically endangered molluscs
• List of recently extinct molluscs
• List of data deficient molluscs