Tube feet in action! Sea urchins use a water vascular system to manipulate their tube feet. Water movement to and from the feet is controlled through muscular tubes. As the tube feet press against an object, removal of water from the tube creates a vacuum. When the tube is refilled with water, the vacuum is broken and the grasp of the foot is released. Video by Aquarist Adam #loveAOP #aquariumofthepacific | Aquarium of the Pacific
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Tube feet in action! Sea urchins use a water vascular system to manip…
2.2K viewsJul 3, 2017
FacebookAquarium of the Pacific
Tube feet for roaming, tooth-like plates for food-scraping — behold the mesmerizing sea urchin underside up close. (P.S. Those tooth-like plates, along with the spines, are strong enough for sea urchins to dig holes in stone to create sneaky ocean hideouts. Powerful!) | California Academy of Sciences
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FacebookCalifornia Academy of Sciences
DID YOU KNOW? Sea urchins can walk, using their tube feet to move along the seafloor. These feet are also how the sea urchin breathes. | Oceana
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Imagine being a sea creature without the ability to swim! Sea urchins live on the seafloor and use their tube feet to move around. According to @whoi.ocean, their feet are controlled by a water vascular system. By changing the amount of water inside, sea urchins can extend or contract their feet for relatively speedy mobility. For protection, their spiny shell (called a ‘test’) wards off predators craving ‘uni,’ the edible part of an urchin. Sea urchins have been found in fossil records as far b
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Did you know that sea urchins have feet? 🥹 Just like their cousins (starfish and sea cucumbers), sea urchins have feet all over the bottom of their body which helps them move. They also use their mouths to graze on algae! 🫧 The mouth is located below the body and is made out of very strong teeth. The whole mouth structure is called Aristotle’s Lantern because the philosopher was one of the first people to write about the sea urchin’s anatomy. He thought its mouth looked like the lanterns that
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