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	[ Explanation.1 ] 。
	[ Bits of Knowledge.1 ] Poisonous Sea Urchins are very active and moves around very quickly. It is very offensive and it may attack other Urchins if we make them live together.
	[ Bits of Knowledge.2 ] If you look Poisonous Sea Urchins from the top, you would see an orange eyes looking circle in the middle. It looks like an eye, but it is actually a vent. Eyes of Poisonous Sea Urchins are the white dots that are around the vent.