Modulus modulus - <p>Modulus modulus (Linnaeus, 1758) - apertural view of an Atlantic modulus snail shell, 1.0 cm tall. </p> <p>Family Modulidae - the modulus snails are algae grazers and deposit feeders in shallow-water seagrass bed environments. </p> © James St. John - CC BY 2.0 - Wikimedia Commons
Îles de la Petite-Terre - Saint-Martin