Tropic of Capricorn, in the Indian Ocean has many small islands that needs protection. A new sustainable infrastructure that will protect beaches from high tide, because warm currents from the Pacific Ocean moves eastward. Southern Ocean, Antarctica melting ice moving in the ocean, brings high tide to small islands.

Note: Marine communities follow the current, and most of them keep the water cool. Scarcity of crustaceans, and marine communities increase water temperature in the ocean.