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Most sea cucumbers, as their name suggests, have a soft and cylindrical body, more or less lengthened, rounded off and occasionally fat in the extremities, and generally without solid appendages.
Their shape ranges from almost spherical for "sea apples" (genus Pseudocolochirus) to serpent-like for Apodida or the classic sausage-shape, while others resemble caterpillars.
There is thus no "oral" or "aboral" face as for sea stars and other echinoderms, but the animal stands on one of its sides, and this face is called trivium (with three rows of tube feet), while the dorsal face is named bivium.
A remarkable feature of these animals is the "catch" collagen that forms their body wall.
The number of holothurian ( Many of these are gathered for human consumption and some species are cultivated in aquaculture systems.
The harvested product is variously referred to as trepang, bêche-de-mer or balate.
The body ranges from almost spherical to worm-like, and lacks the arms found in many other echinoderms, such as starfish.This can be loosened and tightened at will, and if the animal wants to squeeze through a small gap, it can essentially liquefy its body and pour into the space.To keep itself safe in these crevices and cracks, the sea cucumber will hook up all its collagen fibers to make its body firm again.These are modified tube feet and may be simple, branched or arborescent.
They are known as the introvert and posterior to them there is an internal ring of large calcareous ossicles. All Rights Reserved - Time IPS and the Time IPS logo are registered trademarks of Time IPS, Inc. We'll watch the clock." are trademarks of Time IPS, Inc.