Blue shark underneath drift kelp, open ocean, Prionace glauca, San Diego, California

Blue shark underneath drift kelp, open ocean, Prionace glauca

A blue shark swims through the open ocean in search of prey, backlit by the sunset, Prionace glauca, San Diego, California

A blue shark swims through the open ocean in search of prey, backlit by the sunset. Prionace glauca.

North Pacific Yellowtail brushing against blue shark, Seriola lalandi, Prionace glauca, San Diego, California

North Pacific Yellowtail brushing against blue shark, Seriola lalandi, Prionace glauca

Blue shark and  offshore drift kelp, Prionace glauca, Macrocystis pyrifera, San Diego, California

Blue shark and offshore drift kelp, Prionace glauca, Macrocystis pyrifera

Blue shark underneath drift kelp, open ocean, Prionace glauca, Macrocystis pyrifera, San Diego, California

Blue shark underneath drift kelp, open ocean, Prionace glauca, Macrocystis pyrifera

Blue shark showing ampullae of Lorenzini, eye and small portion of nictitating membrane, Prionace glauca, San Diego, California

Blue shark showing ampullae of Lorenzini, eye and small portion of nictitating membrane, Prionace glauca

Blue shark, open ocean, Prionace glauca, San Diego, California

Blue shark, open ocean. San Diego. Prionace glauca.

Blue shark, Baja California, Prionace glauca

Blue shark, dorsal aspect, Baja California. Prionace glauca.

Blue shark, Baja California, Prionace glauca

Blue shark and offshore drift kelp, Prionace glauca, Baja California.

Blue shark and offshore drift kelp, Prionace glauca, Macrocystis pyrifera, San Diego, California

Blue shark and offshore drift kelp, Prionace glauca, San Diego.

Blue shark and offshore drift kelp, Prionace glauca, Macrocystis pyrifera, San Diego, California

Blue shark and offshore drift kelp, offshore of San Diego. Prionace glauca.

Blue shark underneath offshore drift kelp, open ocean, Prionace glauca, Macrocystis pyrifera, San Diego, California

Blue shark underneath offshore drift kelp, open ocean, San Diego. Prionace glauca.

Blue shark and videographer, Prionace glauca, San Diego, California

Blue shark (Prionace glauca) and underwater videographer, open ocean, San Diego, California

Blue shark, Prionace glauca, San Diego, California

Blue shark, sunset, offshore, San Diego. Prionace glauca.

Blue shark, detail showing ampullae of Lorenzini, Prionace glauca, San Diego, California

Blue shark, detail showing ampullae of Lorenzini, Prionace glauca

Blue shark, Prionace glauca, San Diego, California

Blue shark, Prionace glauca

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, Prionace glauca, San Diego, California

Blue shark, open ocean, Prionace glauca

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, eye and small portion of nictitating membrane, open ocean, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, open ocean, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, Baja California, Prionace glauca

Blue Shark

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, Baja California, Prionace glauca

Blue Shark

Blue shark, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, open ocean, Prionace glauca, San Diego, California

Blue Shark, San Diego

Blue shark, open ocean, Prionace glauca, San Diego, California

Blue shark, open ocean, Prionace glauca