Squat Lobster (?) and Crinoid
This "elbow crab" is another crab that lives on crinoids. Its carapace is shaped like a hexagon (six distinct sides). This crab uses all four pair of legs, not including the chelipeds, as walking legs, whereas the squat lobster only has three pair of walking legs (with the fourth pair tucked up underneath). Though not uncommon, this particular type of animal is seen less frequently than squat lobsters.

Harrovia elegans

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