Competitors competing in an ocean swimming race swim through a group of tourist snorkeling on a reef

swimming swim race surf lifesaving people competitors competition snorkeling reef holiday tourist tourism ocean scuba diver great barrier reef blue water tropical destination tropics coral travel destination australia marine park marine reserve adventure recreation pacific nature wildlife water activity flipper fins ecosystem animal behavour breath floating 4k resolution unique view gbr coral reef tropical underwater drone fish travel clear water pacific ocean dive queensland gold coast