Manta Ray Bay, at Hook Island in the Whitsundays, has an array of underwater valleys, caves, and swim-throughs leading all the way to the seafloor 25 metres below. Considered one of the best dive and snorkel sites in the inshore islands, Manta Ray Bay has a good coverage of hard and soft corals and abundant marine life including Maori Wrasse and Manta Rays in winter.