Large Necklace Shell
NameLarge Necklace Shell
Scientific NameEuspira catena
Common NameLarge Necklace Shell
FamilyNaticidae
GenusEuspira
Speciescatena
Geographic DistributionNortheast Atlantic Ocean, including the British Isles, North Sea, and Mediterranean Sea. The image location (Saintes-Maries-de-la-Mer) is consistent with its Mediterranean distribution.
Habitatintertidal
Average Size (mm)25
Identifying FeaturesKey identifying features include its large, translucent, and highly extensible foot that can almost completely cover the shell. The shell itself is smooth, globular, and often has a characteristic spiral band. The animal possesses two prominent tentacles on its head. It is known for its predatory behavior, drilling a distinctive countersunk hole into the shells of its prey.
Raritycommon
Author Citation(da Costa, 1778)
Description
The Large Necklace Shell is a species of predatory sea snail, characterized by its smooth, globular shell and an exceptionally large, fleshy foot that can almost entirely envelop the shell when the animal is active. It is often found partially buried in sandy substrates, using its expansive foot for locomotion and burrowing. The soft body is typically translucent and pale, as seen in the image, with two prominent tentacles.
