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Depends on the species.

Some are filter feeders, they sift krill and plankton out of the sea water and swallow it.

Some eat fish they can swallow whole.

Some go after bigger prey that has to be bitten into pieces Before swallowing.

Answer

they eat with there several rows of teeth, & digest it.

they usually eat anything smaller than them that lives in the water.

first they whack the prey with there tail then nibble on them to see if they want to eat it and if they do then they eat it with there 5 rows of teeth & digest it

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8y ago

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