Some sharks must swim constantly in order to keep oxygen-rich water flowing over their gills, but others are able to pass water through their respiratory system by a pumping motion of their pharynx. ... However, sharks do have to swim to avoid sinking to the bottom of the water column.
Answers & Comments
Answer:
swim po
Explanation:
Some sharks must swim constantly in order to keep oxygen-rich water flowing over their gills, but others are able to pass water through their respiratory system by a pumping motion of their pharynx. ... However, sharks do have to swim to avoid sinking to the bottom of the water column.
Answer:
they can swim
Explanation:
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