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The spiky spines of purple sea urchins range in colours depending on the exact species and the maturity of the urchin.
They can range from light blue, dark blue, royal blue, indigo, light purple, violet and dark purple.
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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.)
How many purple sea urchins are there?
there are excatly 3million purple sea urchins
What is a sea urchins defence?
its sharp spines
What unusual about the spines of sea urchins?
they are venomous
Is sea urchin a fish?
No, sea urchins are not fish. They are marine animals belonging to the phylum Echinodermata, whereas fish belong to the animal kingdom Chordata. Sea urchins have a hard outer shell made of calcium carbonate and are more closely related to starfish and sand dollars than to fish.
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!
Are the Sea Urchins a type of chemical weathering?
No. Not even close. Sea urchins are small, herbiverous marine invertebrates with spines.
What colors are sea 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.)
How sea urchins protect themselves?
A sea urchin's body is covered in sharp spines.
How are sea anemone and a sea urchin different?
sea anemones have stinging tentacles, and sea urchins have spines.
Do sea urchins have spines?
So that the sea urchin can protect itself from is enemies, it also has venomous spines. They also use their spines to kill other sea ceatures, so they can eat them.
What adaptations do sea urchins need to survive?
they have spines that react to predators
