Nassarius kraussianus

Nassarius kraussianus, common name: tick shell, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.

Description
The size of the shell varies from 6 mm to 10 mm.

Distribution
This species occurs in the Indian Ocean off Mozambique, South Africa and Réunion and in the Atlantic Ocean off Namibia.