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Southern Stingrays, Stingray City, Grand Cayman Island Giant Manta Ray at San Benedicto Island, Revillagigedos, Mexico, Manta birostris, San Benedicto Island (Islas Revillagigedos) Silky Shark at San Benedicto Islands, Revillagigedos, Mexico, Carcharhinus falciformis, Socorro Island (Islas Revillagigedos) Dorsal fin of a great white shark breaks the surface as the shark swims just below, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Great white shark, dorsal fin extended out of the water as it swims near the surface, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Great white shark, underwater, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Great white shark, underwater, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Blue shark showing ampullae of Lorenzini, eye and small portion of nictitating membrane, Prionace glauca, San Diego, California Blue shark, open ocean, Prionace glauca, San Diego, California Blue shark, Baja California, Prionace glauca Blue shark, Baja California, Prionace glauca A great white shark bearing a white plastic researcher's identification ID tag near its dorsal fin swims through the clear waters of Isla Guadalupe, far offshore of the Pacific Coast of Baja California.  Guadalupe Island is host to a concentration of large great white sharks, which visit the island to feed on pinnipeds and tuna, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Tiger shark, Galeocerdo cuvier Expert hand feeds multiple tiger sharks in the Bahamas, Galeocerdo cuvier Great hammerhead shark, Sphyrna mokarran Scalloped hammerhead shark swims underwater at Cocos Island.  The hammerheads eyes and other sensor organs are placed far apart on its wide head to give the shark greater ability to sense the location of prey, Sphyrna lewini Tiger shark with closed nictating membrane, Galeocerdo cuvier Tiger shark close up view, including nictating membrane covering the eye, nostrils and ampullae of Lorenzini, Galeocerdo cuvier Giant Manta Ray at San Benedicto Island, Revillagigedos, Mexico, Manta birostris, San Benedicto Island (Islas Revillagigedos) Silky Shark at San Benedicto Islands, Revillagigedos, Mexico, Carcharhinus falciformis, Socorro Island (Islas Revillagigedos) Silky Shark at San Benedicto Islands, Revillagigedos, Mexico, Carcharhinus falciformis, Socorro Island (Islas Revillagigedos) A great white shark is countershaded, with a dark gray dorsal color and light gray to white underside, making it more difficult for the shark's prey to see it as approaches from above or below in the water column.  The particular undulations of the countershading line along its side, where gray meets white, is unique to each shark and helps researchers to identify individual sharks in capture-recapture studies. Guadalupe Island is host to a relatively large population of great white sharks who, through a history of video and photographs showing their  countershading lines, are the subject of an ongoing study of shark behaviour, migration and population size, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) California bat ray in kelp forest, Myliobatis californica, Macrocystis pyrifera, San Clemente Island Manta ray and scuba diver, Manta birostris, San Benedicto Island (Islas Revillagigedos) Blue shark and offshore drift kelp, Prionace glauca, Macrocystis pyrifera, San Diego, California Blue shark and offshore drift kelp, Prionace glauca, Macrocystis pyrifera, San Diego, California Blue shark underneath offshore drift kelp, open ocean, Prionace glauca, Macrocystis pyrifera, San Diego, California Manta ray and remora, Manta birostris, Remora, San Benedicto Island (Islas Revillagigedos) Manta ray and freediver, Manta birostris, San Benedicto Island (Islas Revillagigedos) A great white shark swims through the clear waters of Isla Guadalupe, far offshore of the Pacific Coast of Baja California.  Guadalupe Island is host to a concentration of large great white sharks, which visit the island to feed on pinnipeds and tuna, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) A great white shark swims through the clear waters of Isla Guadalupe, far offshore of the Pacific Coast of Baja California.  Guadalupe Island is host to a concentration of large great white sharks, which visit the island to feed on pinnipeds and tuna, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) A great white shark underwater.  A large great white shark cruises the clear oceanic waters of Guadalupe Island (Isla Guadalupe), Carcharodon carcharias Lesser electric ray, Sea of Cortez, Baja California, Mexico, Narcine entemedor Giant Manta Ray at Socorro Island, Revillagigedos, Mexico, Manta birostris, Socorro Island (Islas Revillagigedos) Silky Shark at San Benedicto Islands, Revillagigedos, Mexico, Carcharhinus falciformis, Socorro Island (Islas Revillagigedos) Silky Shark at San Benedicto Islands, Revillagigedos, Mexico, Carcharhinus falciformis, Socorro Island (Islas Revillagigedos) A leopard shark, swimming through the shallows waters of a California reef, underwater, Cystoseira osmundacea marine algae growing on rocky reef, Triakis semifasciata, Cystoseira osmundacea, San Clemente Island A great white shark swims through the clear waters of Isla Guadalupe, far offshore of the Pacific Coast of Mexico's Baja California. Guadalupe Island is host to a concentration of large great white sharks, which visit the island to feed on pinnipeds and use it as a staging area before journeying farther into the Pacific ocean, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Manta ray and scuba diver, Manta birostris, San Benedicto Island (Islas Revillagigedos) A great white shark swims just below the rippled ocean surface of Isla Guadalupe, far offshore of the Pacific Coast of Baja California, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe) Manta Rays Feeding on Plankton, Fiji, Manta birostris, Gau Island, Lomaiviti Archipelago Tiger shark close up view, including nostrils and ampullae of Lorenzini, Galeocerdo cuvier Photographing down the throat of a tiger shark with a Gopro on a selfie-stick, Galeocerdo cuvier Tiger shark close up view, including nostrils and ampullae of Lorenzini, Galeocerdo cuvier Expert hand feeds multiple tiger sharks in the Bahamas, Galeocerdo cuvier Two tiger sharks, Galeocerdo cuvier Tiger shark, Galeocerdo cuvier Tiger shark and horse-eye jacks, Galeocerdo cuvier Tiger shark, Galeocerdo cuvier Tiger shark, Galeocerdo cuvier

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Updated: June 19, 2018