Diodora lima
NameDiodora lima
Scientific NameDiodora lima
Common NameKeyhole Limpet
FamilyFissurellidae
GenusDiodora
Specieslima
Geographic DistributionEastern Atlantic Ocean, including the Mediterranean Sea and West Africa.
Habitatintertidal
Shell Shapeconical
Average Size (mm)Typically ranges from 20 to 30 mm in length.
Identifying FeaturesThe most distinctive feature is the apical, keyhole-shaped opening (foramen) at the apex of the shell. Other identifying features include its conical profile and strong, often nodulose, radial ribs.
Raritycommon
Author Citation(Leach, 1815)
Description
A species of keyhole limpet, characterized by its conical, limpet-like shell with an oval base. The shell exhibits prominent radial ribs and a distinctive keyhole-shaped apical opening (foramen). The color is typically light brown or tan. It is often found attached to hard substrates in marine environments, as depicted in the image.
