https://medium.com/the-omnivore/using-technology-to-protect-the-great-barrier-reef-a694cfb53c95

The Great Barrier Reef, located off the coast of Queensland, is the world’s largest coral reef system, stretched over a 344,400 square kilometer area, and composed of over 2,900 individual reefs. The natural wonder is built by tiny creatures called coral polyps, and is the largest single structure built by living organisms in the world. It supports all kinds of life but has been put under immense strain by changing conditions in the seas.

Rising water temperatures due to climate change have put the world’s corals under stress. In warmer waters the coral expels the algae that provide them with the energy they need, which leads to bleaching.