How does an echinoderm move?

Answer 1

Echinoderms, brittle stars, sea urchins, sand dollars, sea lilies, feather stars, and sea cucumbers, are globally distributed in almost all depths, latitudes and environments in the ocean. Almost all echinoderms are benthic - that is, they live on the sea floor-some can swim, and a few deep-sea sea cucumbers are fully floating. Some attach to floating logs and debris, but echinoderms mostly stay in one place. Sea starts inch along on psuedopods, or tiny bulb-like feet.

Echinoderms have a water vascular system instead of a circulatory system. This water vascular system is used for gas exchange, feeding, and locomotion. Echinoderms have tube feet called podia with suction pads situated at their extremities. This vascular system force water through canals of small muscular tubes to the tube feet located in a groove on the underside of each are called the ambulacral groove. As the tube feet press against a moving object, water is withdrawn from them, resulting in a suction effect. When water returns to the canals, suction is released. The resulting movement is generally very slow.
All echinoderms have tube feet. These feet have suction disks that enable the animals to crawl or attach themselves to objects.

Answer 2

Echinoderms have a water vascular system instead of a circulatory system. This water vascular system is used for gas exchange, feeding, and locomotion. Echinoderms have tube feet called podia with suction pads situated at their extremities. This vascular system force water through canals of small muscular tubes to the tube feet located in a groove on the underside of each are called the ambulacral groove. As the tube feet press against a moving object, water is withdrawn from them, resulting in a suction effect. When water returns to the canals, suction is released. The resulting movement is generally very slow.

Answer 3

Echinoderms move using a water vascular system, which involves hydraulic pressure to extend tube feet located on their undersides. By contracting muscles around the water vascular system, they can move their tube feet in a coordinated manner to walk or crawl along surfaces. Some echinoderms, like sea urchins, can also use their spines for limited movement.

Answer 4

The larva of a

cnidarian move by

swimming......

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