Invertebrates
Diadema savignyi
Long-spined sea urchin
| Family Diadematidae. It is a sea urchin with long spines like a needle.
The diameter of the shell is about 7cm. The length of long spines is 20cm
or more. The structure shining in orange like an eyeball on the top of
the shell is an anus. They occasionally clusters over a shallow reef in
warm seas. The spines are venomous. When the spines stick, you feel a strong
pain. Be careful when you swim in the shore. |
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