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| Great hammerhead shark. Image ID: 31969 Species: Great hammerhead shark, Sphyrna mokarran Location: Bimini, Bahamas | 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. Image ID: 03192 Species: Scalloped hammerhead shark, Sphyrna lewini Location: Cocos Island, Costa Rica | Tiger shark with closed nictating membrane. Image ID: 31910 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas |
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| Tiger shark close up view, including nictating membrane covering the eye, nostrils and ampullae of Lorenzini. Image ID: 31925 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Silky Shark at San Benedicto Islands, Revillagigedos, Mexico. Image ID: 33317 Species: Silky Shark, Carcharhinus falciformis Location: Socorro Island (Islas Revillagigedos), Baja California, Mexico | Silky Shark at San Benedicto Islands, Revillagigedos, Mexico. Image ID: 33320 Species: Silky Shark, Carcharhinus falciformis Location: Socorro Island (Islas Revillagigedos), Baja California, Mexico |
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| 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. Image ID: 19468 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | Blue shark and offshore drift kelp paddy, open ocean. Image ID: 01077 Species: Blue shark, Prionace glauca, Macrocystis pyrifera Location: San Diego, California, USA | Blue shark and offshore drift kelp. Image ID: 01082 Species: Blue shark, Prionace glauca, Macrocystis pyrifera Location: San Diego, California, USA |
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| Blue shark and offshore drift kelp paddy, open ocean. Image ID: 01153 Species: Blue shark, Prionace glauca, Macrocystis pyrifera Location: San Diego, California, USA | 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. Image ID: 07667 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | 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. Image ID: 07733 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico |
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| A great white shark underwater. A large great white shark cruises the clear oceanic waters of Guadalupe Island (Isla Guadalupe). Image ID: 10114 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | Silky Shark at San Benedicto Islands, Revillagigedos, Mexico. Image ID: 33312 Species: Silky Shark, Carcharhinus falciformis Location: Socorro Island (Islas Revillagigedos), Baja California, Mexico | Silky Shark at San Benedicto Islands, Revillagigedos, Mexico. Image ID: 33322 Species: Silky Shark, Carcharhinus falciformis Location: Socorro Island (Islas Revillagigedos), Baja California, Mexico |
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| Galapagos shark. Image ID: 16239 Species: Galapagos shark, Carcharhinus galapagensis Location: Wolf Island, Galapagos Islands, Ecuador | 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. Image ID: 19453 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico | A great white shark swims just below the rippled ocean surface of Isla Guadalupe, far offshore of the Pacific Coast of Baja California. Image ID: 07717 Species: Great white shark, Carcharodon carcharias Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico |
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| Lemon shark with live sharksuckers. Image ID: 10754 Species: Lemon shark, Negaprion brevirostris, Echeneis naucrates Location: Bahamas | Tiger shark close up view, including nostrils and ampullae of Lorenzini. Image ID: 31911 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Photographing down the throat of a tiger shark with a Gopro on a selfie-stick. Image ID: 31912 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas |
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| Tiger shark close up view, including nostrils and ampullae of Lorenzini. Image ID: 31913 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Expert hand feeds multiple tiger sharks in the Bahamas. Image ID: 31914 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Two tiger sharks. Image ID: 31915 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas |
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| Tiger shark. Image ID: 31916 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Tiger shark and horse-eye jacks. Image ID: 31917 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Tiger shark. Image ID: 31918 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas |
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| Tiger shark. Image ID: 31919 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Tiger shark and underwater photographer. Image ID: 31920 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas | Expert hand feeds multiple tiger sharks in the Bahamas. Image ID: 31921 Species: Tiger shark, Galeocerdo cuvier Location: Bahamas |
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