The great barrier reef is in North -East coast of Australia. It is an important monument of the sea  because it  is so beautiful  and hosts many fish. It  is the largest coral reef system in our planet But there are some things that harm corals. One of them is that the temperature of Earth and oceans is rising. This causes coral bleaching which means that corals lose their colors and start dying. Between 2016 and 2017 ,almost 50% of the corals died

by: G.Patakia