Scuba diver following a large Green Sea Turtle as if glides through the blue ocean currents

green sea turtle chelonia mydas great barrier reef marine reserve turtle snorkeling marine science reef underwater freediving open water scuba diver scuba course ocean current australia blue water endangered species sea gbr floating ocean shell byron bay swimming flippers protected reptile tourism first person view 4k resolution fins national parks following animal travel first nations pattern friendly glides fpv julian rocks unique fishing holiday spot greet spotted tail behaviour