Horizontal, mammals, Snorkler, Threatened, One, cetacean, Great Barrier Reef, Blue, tail, Marine Mammals, Underwater, tropics, Tropical, Flukes, Sea, Swimming, People, Water, Surface, Endangered, Minke whale, swim, research, 1, Freund, dorsal, Marine, Ocean, Queensland, Tails, Adventure, Snorkeling, Pacific, Mammal, Portraits, Australia, whale watching, Whales, fins, science, Leviathan, cetaceans, pectoral, Coral Sea