extracts oxygen from seawater
1 year ago
5.91K
Adhesive tube feet run the length of their bodies and allow them to scoot along the seafloor.Specialized tube feet can be used for feeding and respiration,though many sea cucumbers actually breathe through their anuses.Rhythmically contracting and relaxing their muscles,they draw water in and out over an internal lung-like structure called a respiratory tree that extracts oxygen from seawater.
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