S. Navy photo by Mass Communication Specialist 2nd Class Casey H.
美国海军图片由大众传媒二级专家凯西H.
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S.Navy photo by Mass Communication Specialist 2nd Class Casey H.
美国海军图片由大众传媒二级专家凯西H.
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It turns out, almost every species in the upper parts of the ocean in warm parts of the world have these same photo receptors, and use sunlight as the source of their energy and communication.