Neverita duplicata · Naticidae
How to identify a shark eye
Glossy globose shell 1–3 inches wide with a low spire and a deeply set umbilicus partly covered by a callus. Overall pale tan to grey-blue with a darker central 'pupil'.
- Round, polished body whorl
- Dark spiral 'eye' at the apex
- Callus partly filling the umbilicus (separates from Atlantic Moon Snail)
- Family
- Naticidae
- Class
- Gastropod
- Regions
- East Coast · Gulf Coast
- Habitat
- Sandy Intertidal · Sandy Subtidal
- Collector level
- Beginner
Collect with care
- Moon snails are burrowing predators — check for a soft body before pocketing what looks like an empty shell.
In your journal
- Note the umbilicus — a partly-filled callus is the shark eye field mark.