Name any three forms of energy which could be harnessed from the sea.

the three forms of energy are:

(i) Tidal energy

It is a form of hydropower that converts the energy obtained from tides into useful forms of power, mainly electricity.

(ii) Wave energy

It describes the process by which wind is used to generate electricity.

(iii) Ocean thermal energy

It is a process that can produce electricity by using the temperature difference between deep cold ocean water and warm tropical surface waters.