A sea cucumber extracts oxygen from the water in a pair of ‘respiratory trees’ that are located inside of their body. In order to get the water into these ‘trees,’ it must draw water in through its anus!
(source)
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A sea cucumber extracts oxygen from the water in a pair of ‘respiratory trees’ that are located inside of their body. In order to get the water into these ‘trees,’ it must draw water in through its anus!
(source)
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