Alex Mustard / An Atlantic long arm octopus (Octopus defilippi) swims across the seabed. This is a typical swimming posture for long arm octopus, but it has been suggested as mimicking a poisonous sole in the mimic...

Alex Mustard / A pair of mating Atlantic longarm octopus (Octopus defilippi), with the male, on the right, gripping the female, West Palm Beach, Florida, USA

Alex Mustard / Florida manatee (Trichechus manatus latirostris) swimming in evening sunbeams, Three Sisters Spring, Crystal River, Florida, USA.

Alex Mustard / Florida manatee (Trichechus manatus latirostris) group gathered in large numbers in Three Sisters Spring for the night, Crystal River, Florida, USA.

Alex Mustard / A pair of Lined / Northern Seahorses (Hippocampus erectus) mating. Female closer, male behind. West Palm Beach, Florida, USA, July.

Alex Mustard / A pair of Lined / Northern Seahorses (Hippocampus erectus) mating. Female closer, male behind. West Palm Beach, Florida, USA, July.

Tim Laman / Humpback whales (Megaptera novaeangliae) lunge feeding, off Massachusetts, USA.

Kevin Schafer / Atlantic Salmon (Salmo salar), eastern United States

Doug Perrine / Crew of longline fishing boat load finned Porbeagle shark (Lamna nasus) carcasses into ice box, Nova Scotia, Canada (North Atlantic Ocean) 2008

Doug Perrine / Crew member of longline vessel removes fins from Porbeagle shark (Lamna nasus) in a legal and managed fishery; fins and carcasses are landed separately, but must be equivalent in number; Nova Scotia,...

Doug Perrine / Longline fishermen pull a Porbeagle shark (Lamna nasus) into the boat, in a legal and managed fishery, Nova Scotia, Canada (North Atlantic Ocean) 2008

Doug Perrine / Dorsal fin of Porbeagle shark (Lamna nasus) with spaghetti tag inserted from University of New Brunswick / Canadian Shark Conservation Society research program, New Brunswick, Bay of Fundy, Canada 20...