List two forms of energy in which solar energy manifests itself in oceans.

(N/A) Solar energy manifests itself in the oceans primarily in the following two forms:
$(i)$ Ocean thermal energy: This is due to the temperature difference between the warm surface water and the colder deep water.
$(ii)$ Wave energy: This is caused by the wind blowing across the surface of the ocean,which is ultimately driven by solar heating of the atmosphere.