manta's

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The blade-like projections on either side of the head help to steer plankton into the manta's mouth.
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The blade-like projections on either side of the head help to steer plankton into the manta's mouth. 头部对称的2块刀片状的凸状物 帮助蝠鲼把浮游生物送到嘴里

manta's steer projections blade-like plankton side mouth help head either into of the to on
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