Water has a higher specific heat capacity because of the strength of the hydrogen bonds. It requires a significant of energy to separate these bonds. The differential heating between water and land. Water, like the ocean, has a high specific heat, so it changes temperature slower. Land, like sandy beaches, has a low specific heat, so with the same amount of heat, it increases temperature more quickly compared to water.
I wish that I could turn a blind eye - ResearchGate, despite my regular protestations, fills my 'feed' with these questions that are, as you say, stealing content without appropriate attribution.