Sea Urchins

There are over 900 sea urchin species and they can be found in almost all parts of any ocean. They are often characterized by protruding spines from their test.

1,392 Questions
Animal Life
Invertebrates
Sea Urchins

How much do sea urchins weigh?

around 2300 pounds

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Animal Life
Invertebrates
Red Sea
Sea Urchins

How do giant red sea urchins reproduce?

by mating with another GIANT red sea urchin!

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Animal Life
Sea Urchins

What lives with Sea Urchins?

sea urchins can create a symbiosis with several species of crabs

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Sea Urchins

What do Sea Urchins eat?

Sea urchins eat algae, small fish, mussels, sponges, brittle stars, and crinoids. They stun them with their spines. Their mouth is located on the bottom of their body. They have almost invisible tube feet.Its very cool to see in the scientific research videos.

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Sea Urchins

How much does a long-spined sea urchin weight?

2.5 lbs

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Invertebrates
Sea Urchins

Do sea urchins have any defense mechanisms?

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Invertebrates
Sea Urchins

Do humans eat sea urchins?

Humans gut them out, and eat their insides. Talk about gross!!

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Invertebrates
Taxonomy
Sea Urchins

What does sea urchins use their spines for?

Mostly for protection and also for locomotion.

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Care of Fish
Biology
Invertebrates
Sea Urchins

Where do you get sea urchins on my sims kingdom?

well you get them at rocket reef at a fishing station they are really hard to catch tho thought i wouldn't be able to help but have a see (there rare to get)

345
Biology
Sea Urchins

Where do sea urchins live?

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

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Invertebrates
Sea Urchins

How does sea urchins move in the sea?

Sea urchins move using their tube feet and spines on the underside of their body. they use their water vascular system. THis is where they pump water into their feet and when they touch the ground the water gets pushed out. This uses a lot of energy but only works slowly.

91011
Animal Life
Invertebrates
Starfish
Sea Urchins

How do sea urchins and sea stars feed alike?

Both have their mouths (oral surface) at the bottom of their bodies. However, a sea urchin has teeth called aristotles lantern that scrapes algae off rocks, while a sea star ejects it stomach around the contents of its food to digest its prey.

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Sea Urchins

How deep in the sea do sea urchins live?

really deep

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Invertebrates
Sea Urchins

What is the sea urchins genus?

Sea urchins or urchins are small, spiny, globular animals that, with their close kin, constitute the class Echinoidea of the echinoderm phylum.

Echinus is the genus that contains the common sea urchin.

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Saltwater Fish
Invertebrates
Whales
Sea Urchins

Do sea urchins have predators?

Yes it does they are sea otters, crabs, and a type of fish.Yes it does they are sea otters, crabs, and a type of fish.

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Sea Urchins

Which pair of words is a likely place to find the word sea urchin scuttle and seal or season and second?

season and second

123
Invertebrates
Ecosystems
Sea Urchins

Are sea urchins abiotic or biotic?

Biotic.

123
Zoology or Animal Biology
Sea Urchins

How do sea urchins move?

Sea urchins move by using tube feet on it's underside that work with the spines to help it move

101112
Starfish
Sea Urchins

Why are echinoderms grouped with the starfish and sea urchins?

Echinoderms are not 'grouped' with the starfish and sea urchins. Rather echinoderms are the animal phylum to which starfish and sea urchins belong to. Star fish belong to the class Asteroidea and sea urchins belong to the class Echinoidea. There are other echinoderm classes such as sea cucumbers (Holothuroidea) and brittle stars (Ophiuroidea) are two of them. All these classes fall under the Echinoderm phylum.

All echinoderms share some distinguishing features:

1. Their adult bodies are arranged in five equal parts

2. They have an internal calcium carbonate skeleton

3. They have a mouth, but no head or brain (they do have a nervous system)

4. They can posses tube feet for locomotion

5. They posses a internal hydraulic system consisting of tubes of sea water to regulate the body's internal pressure and to control movement feeding and respiration.

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Sea Urchins

What do sea sea urchins eat?

They eat algae, mussels, small fish, brittle stars, sponges, and crinoids.

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Saltwater Fish
Invertebrates
Sea Urchins

Can sea urchins shoot their spines?

Sea urchins do NOT shoot there spines. They can simply let them pop out (sort of like a porcupine). Most people make this mistake... neither a porcupine or sea urchin SHOOT there spines. They do harden and stick out farther but they DO NOT SHOOT THEM!

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Saltwater Fish
Mammals
Whales
Sea Urchins

How do sea otters eat sea urchins?

Sea Otters find sea urchins on the ocean floor and break it open with a rock. It will then eat everything except the spines (the insides).

91011
Starfish
Sea Urchins

Do starfish eat sea urchins?

Yes, starfish do eat sea urchins.

They wrap themselves around the sea urchin and evert their stomach against it to dissolve away the flesh and shell. Eventually when the flesh and shell is dissolved by the starfish stomach acids, the starfish eats the inside of the sea urchin.

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Conditions and Diseases
Care of Fish
Invertebrates
Sea Urchins

How do you remove a sea urchin spine from your foot?

Remove what you can with a pair of tweezers. This will leave embedded fragments, but cover the area with heavy duty duct tape for a few days, replacing when necessary. The skin will soften and the fragments migrate to the surface when they can easily be removed. Worked very well in getting about a dozen spines from my foot. Tony Brown, Stockport, UK.

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Invertebrates
Sea Urchins

What are the sea urchins color?

There is not an exact colour but, black, red, purple, and green are some of the most common colours you will see on a sea urchins.

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