What is this thing??

Was walking along the seas edge in Cozumel last week and saw this thing . It is about 3 inches in length and it was near a whole batch of others. They were slightly smaller.

My friend said a Caribbean lobster but I thought NOT!!

so it was moving along slowly, what is it??

thanks

Yvette

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Fuzzy Chiton

Your little critters are mollusks, not crustaceans like shrimp & lobster, that feed on algae and are often found in the tidal pools along Coz's ironshore. The ones you photographed are known as Fuzzy Chitons.