Sonic tagged coral trout from the Great Barrier Reef, Australia (4)1 A barracuda from The Great Barrier Reef, Australia2 A blacktip reef shark, Great Barrier Reef, Australia3 A brook trout at a fishway in North Island, New Zealand4 A harlequin tuskfish from The Great Barrier Reef, Australia5 A peacock cod from The Great Barrier Reef, Australia6 A potato cod from The Great Barrier Reef, Australia7 A spangled emperor from The Great Barrier Reef, Australia8 A sweetlip emperor from The Great Barrier Reef, Australia9 Attaching an external radio tag on a white sucker, Welland, Ontario10 Coral trout from One Tree Island, The Great Barrier Reef, Australia (1)11 Coral trout from One Tree Island, The Great Barrier Reef, Australia (2)12 Coral trout from One Tree Island, The Great Barrier Reef, Australia (3)13 Coral trout from the Great Barrier Reef, Australia (1)14 Inserting a tag into a Coral Trout at One Tree Island, The Great Barrier Reef, Australia15 Rainbow trout at a fishway in New Zealand16 Running videography equipment at the DOW Chemical Dam, Tittabawassee River, Midland, Michigan17 Scuba diving on The Great Barrier Reef, Australia18 Shark hunting on The Great Barrier Reef, Australia19 Sono bouys before deployment at The Great Barrier Reef, Australia20 Surgery on a coral trout from The Great Barrier Reef, Australia21 A snubnose dart and a whiting from The Great Barrier Reef, Australia22 Diving with atherinids at One Tree Island, The Great Barrier Reef, Australia23