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sea cucumber
A typically sausage-shaped, marine echinoderm (class Holothuroidea) having a mouth at one end surrounded by up to 30 tentacles and an anus at the other end. Sea cucumbers have a leathery skin that contains minute bony structures known as ossicles. They are found on or in the seabed, from shallow water to the deep sea.
Related category
• ZOOLOGY
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