Barrel-shaped Holothuroidea, commonly known as sea cucumbers are part of a larger animal group called echinoderms, which also contains starfish and sea urchins. All sea cucumbers are ocean dwellers, though some inhabit
Barrel-shaped Holothuroidea, commonly known as sea cucumbers are part of a larger animal group called echinoderms, which also contains starfish and sea urchins. All sea cucumbers are ocean dwellers, though some inhabit
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