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:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.