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Sea Urchins

How many egg do sea urchins ley?

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there are excatly 3million purple sea urchins


Humans, sea otters, and many more sea creatures eat sea urchins


no one knows how much sea urchins there r


Sea urchins are purple, red, orange, yellow/orange, and a mix of red and purple.(Sea Urchins come in many shapes sizes and colors.)


what are a sea urchins movement


No. Sea urchins live in the sea.


sea otters eat sea urchins


there are none because sea urchins live in water and not on land unless they are dead


sea urchins come from the ocean


Sea urchins are echinoderms, not mammals.


Sea urchins do not communicate with each other


sea urchins can either reproduce sexually or asexually sea urchins can either reproduce sexually or asexually


Sea Urchins have spikes are soft and chalk like , or they can be , hard and covered by a shell-like structure . There are more than 200 types of Sea Urchins , there are many different sizes and shapes of Sea Urchins species.



How deep do sea urchins live


Sea Urchins are multicellular animals, phylum echinodermata.


No, or they wouldn't be called *sea* urchins.


Sea urchins are ocean creatures, and do not survive in fresh water. Sea urchins can only thrive in a seawater environment.


Sea urchins live in the sea, rock pools, kelp forests, and coral reefs


No. Sea urchins are primary consumers and only eat sea weed, algae and kelp.


No - sea urchins are part of the echinoderm phylum, with sand dollars, starfish and sea cucumbers.


it depends on which sea urchin........some sea urchins in Australia shoot poison


In the 1800s, too many sea otters were hunted for their fur. Without sea otters, fewer sea urchins were eaten. Soon, too many sea urchins were being born. Smaller fish could not survive, because sea urchins ate their supplies of kelp. These fish were food for sea stars and crabs. The sea stars and crabs began to die out.


Sea urchins eat seaweed,algae and bits of plants and animals.


Yes, sea urchins are herbivores because they mainly feed on algae.



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