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  • Sea star or starfish (Asteroidea)
  • Brittle stars, basket stars, serpent stars (Ophiuroidea)
  • Sea urchins, heart urchins and sanddollars (Echinoidea)
  • Holothurians or sea cucumbers (Holothuroidea)
  • Feather stars and sea lilies (Crinoidea).
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Q: How many types of sea urchins?
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Related questions

How many kinds of sea urchins are there?

200 types


What is the unique features of a sea urchin?

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 many purple sea urchins are there?

there are excatly 3million purple sea urchins


Which sea animal is blind?

Many many types of sea animals are blind; the list includes sea anemones, corals, jellyfish, starfish, urchins, sea cucumbers, sea lillies, sponges, tunicates, and many many more.


How many sea urchins are in a square yard?

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


What color are urchins?

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


Do sea urchins live in Connecticut?

No. Sea urchins live in the sea.


Are there any other types of echinoderms other than sea urchins and sea stars?

Yes, there are also sea cucumbers and crinoids.


What does the process of fertilization in sea urchins produce?

More sea urchins.


What are examplres of consumers in the ocean?

Well there are a couple of types like the sea turtle, they eat kelp. So do sea urchins.


What colors are sea urchins?

Sea urchins come in a variety of colors including purple, red, green, black, and white. Each species of sea urchin can have its unique color patterns.


What category do sea urchins fit into?

The classification of a Sea Urchin is Echinoidea