Unique high view of snorkelers drifting across the tropical coloured waters of the Great Barrier Reef Australia

great barrier reef snorkeling marine reserve coral bleaching coral reef drone view queensland blue water australia sea bed scuba diving glass bottom boat seabirds pacific scuba swimming deserted island dive boat tropical destination marine park island tropics water activity floating diver tourism summer holiday ecosystem travel destination different perspective unique view 4k resolution wildlife global warming blue sky excursion camp tourist nature reserve school activity adventure animal encounter infrastructure recreation nature plastics teachers lessons lady elliot