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Sea Urchins |
Purple Sea Urchin |
| The life cycle
of a sea urchin starts by spawning directly into the sea. First,
the male spurts out his sperm. Then the female comes and spurts
out her eggs. If the sperm and eggs touch, then a new baby sea
urchin will form. After the male spurts out his sperm, more males
and females come and spurt out their sperms and eggs. As a group
thing there is a good chance that more baby sea urchins will
form. |
| Sea urchins
live in the mid-level or low-level of a tide pool. Sea urchins
eat algae off of hard surfaces. Most of the time they eat seaweed.
Sometimes they eat bits of plants and small animals. Sea urchins
have hundreds of tiny, tubed feet. They have five teeth in the
middle of their back side. Sea urchins use these teeth to pull,
tear and rip off algae on the rocks.These teeth continue to grow
throughout the sea urchin's life. |
| A sea urchin's
size is about 4 inches and they come in many different colors.
The most common are purple and light pink. |
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| Diet |
seaweed, algae and bits of plants and animals |
| Size |
up to 4 inches ( 10 cm) |
| Color |
purple and light pink |
| Life Cycle |
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| Predators |
Who wants to eat a pincushion? |
| Neat Facts |
They have five teeth. |
| Types |
Caribbean sea urchin, pencil urchin, Slate pencil urchin,
purple sea urchin and sea potato |
| Relatives |
star fish and sea cucumber |
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Try our sea
urchin quiz. |
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