- Portuguese: Burrié, Burrelho
- Spanish: Bígaro, Mincha
- French: Bigorneau
- Dutch: Alikruik
- Swedish: Strandsnäcka
- Norwegian: Strandsnegl
- Danish: Strandsnegl
- Icelandic: Fjörudoppa
- Other: Horse-winkle (Irish); Gwichiaid (Welsh)
Maximum length just over 2½ cm.
The shells are usually dark grey or brown, but many other colours occur, such as whitish green and even ‘red or rufous-brown, with narrow bands of smoke colour’ (Lovell, who thus reminds us of that useful but neglected word ‘rufous’).