Although they don't superficially resemble other members of the phylum Echinodermata, sea cucmbers retain pentameral (five-rayed) symmetry, with five rows of tube feet running from the mouth down along the sides of the body.
Sea cucumbers are economically important in two main ways. They produce chemical compounds that are of interest to pharmaceutical firms, and as a food item in Asia, they form the basis of a multimillion-dollar industry that processes the body wall for sale as beche-de-mer or trepang.
Related category• ZOOLOGY
Source: NOAA CoRIS
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