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  1. they have 5 teeth
  2. they grow up to 4 inches
  3. they can live forever, unless they gat a disease or get attacted by a predator
  4. They come in a many different colors.

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Wiki User

13y ago
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AnswerBot

4mo ago

Sea urchins are marine animals found in oceans worldwide. They have a hard, spiny exoskeleton and use tube feet to move and feed. They come in various sizes and colors and play important roles in marine ecosystems.

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Q: What are facts about sea urchins?
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Related questions

Do sea urchins live in Connecticut?

No. Sea urchins live in the sea.


What does the process of fertilization in sea urchins produce?

More sea urchins.


What is a great sea urchin website?

Fact monster.com and after you look for that then on the side it should say marine life. Once u click that in alphabetical order they have sea urchins at the very bottom. Click on that then it gives u facts and other websites about sea urchins.


What category do sea urchins fit into?

The classification of a Sea Urchin is Echinoidea


How are sea urchins and kelp forests connected?

sea urchins eat kelp.


How many purple sea urchins are there?

there are excatly 3million purple sea urchins


What phylum do sea urchins belong?

Sea urchins belong to the phylum Echinodermata.


Are sea urchins predators?

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


Where can sea urchins be found?

in the sea


Is sea urchins herbivorous?

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


Ho do sea urchins reproduce?

Sea urchins reproduce by releasing eggs and sperm into the water, where external fertilization takes place. Once fertilized, the eggs develop into larvae that eventually settle and grow into adult sea urchins. Some species of sea urchins can also reproduce by asexual means, such as splitting or budding.


Where can you find a sea urchins?

Sea urchins are found generally in the sea, however they can also be found in/on rock pools or areas near to the sea.