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Species name : Hemicentrotus pulcherrimus
National Defense Medical college, Laboratory of Biology Tatsuhiko Noguchi
Young baby sea urchin walking with their tube feet on the surface of glass dish. Sea urchin embryo develops into pluteus larva first, which can swim in sea water freely. For a month or so, it catches tiny planktons to grow bigger. Then, they metamorphose into baby sea urchin that no longer swim but walk on the sea bed searching for seaweed.
(2014.07.22)