Text: This is one of the richest areas in the world for tropical fish and corals, and has excellent underwater visibility, ranging from 15 to 40 metres (50 to 130 feet) and more.
Entailment: In this area, rich in tropical fish and corals, there is underwater visibility ranging from 50 to 130 feet.
Contradiction: There are only a few fish and coral, and the visibility is horrible.