The Nautilus Log
Geography Cone

Geography Cone

NameGeography Cone
Scientific NameConus geographus
Common NameGeography Cone
FamilyConidae
GenusConus
Speciesgeographus
Geographic DistributionIndo-Pacific region, ranging from East Africa and the Red Sea across the Indian Ocean to the central Pacific, including Hawaii.
Habitatintertidal
Shell Shapeconical
Average Size (mm)Typically ranges from 70 to 100 mm in length, but can grow up to 150 mm.
Identifying FeaturesIts broad, conical shell with a low spire and distinctive tent-like color pattern (though often hidden by periostracum) are key identifiers. The presence of a long, mottled siphon and mantle extending over the shell is also characteristic. Most importantly, it is renowned for its extremely potent venom, making it one of the most dangerous cone snails.
Raritycommon
Author CitationLinnaeus, 1758

Description

The Geography Cone is a highly venomous marine gastropod mollusc, known for its distinctive shell pattern and potent neurotoxins. It is one of the most dangerous cone snails to humans. The shell is broadly conical with a low spire, often covered by a thin, yellowish-brown periostracum. The underlying pattern consists of irregular, tent-like markings of dark brown or black on a white or cream background. The animal itself, including its siphon and mantle, is often mottled and extends over the shell.

Related Seashells

Geography Cone | The Nautilus Log