Gibbula
Gibbula is a genus of small, edible sea snails, marine gastropod molluscs in the family Trochidae, the top snails. They are commonly called “top shells” due to their conical, top-shaped shells. These snails are found in intertidal and shallow subtidal habitats, often in rocky areas and seaweed beds, primarily in the northeastern Atlantic Ocean and the Mediterranean Sea.
Common Names
Common names for Gibbula species include:
- Top shells
- Button snails
- Top snails
Characteristics
Gibbula species are typically small, with shell diameters ranging from a few millimeters to a couple of centimeters. They have conical, solid shells with a characteristically rounded, smooth, or slightly sculptured apex (the tip). The shells often exhibit vibrant colors and intricate patterns, ranging from shades of brown and red to yellow and white. Their columella, the central pillar of the shell, is typically smooth. These snails have a well-developed operculum, a horny or calcareous plate that covers the opening of the shell when the animal retracts inside.
Environment
Gibbula species are primarily found in intertidal and shallow subtidal zones, often in rocky areas and seaweed beds. They prefer habitats with moderate wave action and abundant algae, which they graze on. They are common in the northeastern Atlantic Ocean, from the British Isles to the Mediterranean Sea.