Stats

Lifespan: 10-20 yrs
Size: Large
Diet: Herbivore
Activity: Nocturnal
Social: Solitary
Biome: Rocky intertidal zone
Range: North America
Movement: Walking
Breeding: Egg-laying
Defense: Armor
Status: Uncommon

About

A large sea snail of California's rocky reefs, with a black mantle that nearly swallows its pale shell. Its shell has a hole at the top that vents water and waste pumped through its gills.

Life cycle

1.
juvenile
A juvenile mollusk takes adult form after its larval phase and begins building or growing its shell.
2.
adult
Fully grown at adult shell size or body length.

Learn more

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Taxonomy

Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Lepetellida
Family: Fissurellidae
Genus: Megathura
Species: Megathura crenulata