What enables a whale to move its fins in the ocean?

The energy taken in by the whale through the food it consumes enables a whale to move it's fine in the ocean.

Explanation:

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yes, because even though a theory has a  lot of evidence to support it, it is not always true

the energy generated by an individual's metabolism is calculated in met (metabolic equivalent of task). the met is the ratio of the work metabolic rate to the resting metabolic rate. one met is illustrated as 1 kcal per kilogram per hour, and is probably equal to the energy cost of sitting quietly.

1 met is equal to 1.162 watt per kg

1 kg is equal to 1000 grams

as the person weighs 80000 gm, that is, 80 kg.

therefore, 80*1.162 = 92.96

thus, the person expends 92.96 watts of power while at rest.