Giant Keyhole Limpet

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Megathura crenulata

Giant Keyhole Limpet, a reference photo
Photo: Ed Bierman · CC BY 2.0 (licence)

Megathura crenulata is a northeastern Pacific Ocean species of limpet in the family Fissurellidae known commonly as the great keyhole limpet or giant keyhole limpet. Megathura is a monotypic genus; in other words, this is the only species in that genus. This species occurs along the rocky coast of western North America, its distribution extending from Southern California to the Baja California peninsula in Mexico. It is found in the intertidal zone and in the sea up to a depth of 33 meters.

From Wikipedia, under CC BY-SA 4.0.

Is it venomous or poisonous?

We have no record of Giant Keyhole Limpet being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

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

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