Common terrestrial pill bug (Armadillidium vulgare)
Contrary to popular belief, pill bugs are not bugs. They are not classified into the class Insecta, and aren’t even in the same subphylum. Pill bugs are crustaceans, specifically isopods, which are more closely related to lobsters and crabs than they are to insects.
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Burrowing shrimp (family Callianassidae) make U- or Y-shaped underground networks of burrows in the fine substrate of shallow waters. They are soft-bodied crustaceans, predatory on small organisms and worms. In many species of burrowing shrimp, one of the first thoracic legs is larger than the other to aid in the creation of their subsurface homes.
Pictured are a Callichirinae sp. and Callianassa californiensis.
Freshwater amphipod species, Gammarus pulex
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Zebra urchin crab, Zebrida adamsii
Photo © Teresa Zubi
Flat rock crab, Percnon planissimum
Photo © Teresa Zubi
Sea Star Swimmer Crab, Lissocarcinus polybiodes
Photo © Teresa Zubi
Harlequin swimmer crab, Lissocarcinus laevis
Photo © Teresa Zubi
Mosaic boxer crab, Lybia tessellata
Photo © Teresa Zubi
Lumpy box crab, Calappa gallus
Photo © Teresa Zubi
Horned Crinoid Crab, Ceratocarcinus longimanus
Photo © Teresa Zubi