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It’s #fishyfriday Did you know Sea Urchins have feet? Sea urchins have tube feet! All echinoderms have unique hydraulic structures called tube feet, known for their roles in light sensitivity, respiration, and locomotion. Take a look at one of our Pinchushion Sea Urchins showing off his feet! | Cameron Park Zoo
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The correct answer is B. Tube feet, which help them glide gracefully across the ocean floor by creating suction and gripping surfaces. Tube feet in sea urchins are small, retractable, suction-cup-like structures found on their undersides. These feet are operated by a water vascular system unique to echinoderms, which includes sea stars and sea cucumbers as well. Sea urchins use their tube feet to move, feed, and cling to surfaces. Here's how they work: Movement: Sea urchins use their tube feet t
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We noticed this sea urchin crawling across the underwater camera at our Campbell River community observatory this week. These spiny echinoderms move by walking using their flexible tube feet, operated by hydraulic pressure which pumps water in and out of these adhesive appendages. Sea urchins inhabit all oceans, feeding primarily on algae but also slow-moving or sessile invertebrates. Their five self-sharpening teeth are so strong that they can literally chew through stone without getting dull -
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