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サマリー
あらすじ・解説
Many of you might have loved watching SpongeBob as a child, but did you know that Patrick Star is actually an echinoderm? That's right, starfish and sea stars, along with sea cucumbers and prickly urchins, are all part of an important phylum called Echinodermata. This phylum is thought to be a link between earlier animals and more "complex" ones like us! On top of this important phylogenetic element, they're some of the most unusual invertebrate animals out there. Have a listen to find out how weird echinoderm skin is or why they have no blood!