oceans, seas, rivers, lakes, and other water bodies cover 71% of the Earth’s surface. Marine biodiversity consists of various species of animals, be it the world’s biggest animal or the smallest.

The ocean is home to such innumerable species. According to a report presented by the United Nations’ Food and Agricultural Organisation, 40% of the world’s population lives within a 100 km radius of the coast. About 10-12% of people depend on the ocean for their livelihood. Oceans and seas work as a carbon sink, which means they have the ability to absorb excess carbon generated due to anthropogenic uses. They further play a major role in maintaining complex ecosystems.

The green sea turtle (Chelonia mydas) sticked her head above water to breathe air. Hikkaduwa coral reef, Sri Lanka. Shot taken with Canon 5D mk III