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.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19464
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.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19467
A great white shark swims toward the photographer. Perhaps the shark is considering him as possible prey? The photographer, a "shark diver" is safely situated in a sturdy metal cage. The best location in the world to "shark dive" to view great white sharks is Mexico's Guadalupe Island.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19469
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.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19471
A great white shark swims toward the photographer. Perhaps the shark is considering him as possible prey? The photographer, a "shark diver" is safely situated in a sturdy metal cage. The best location in the world to "shark dive" to view great white sharks is Mexico's Guadalupe Island.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19472
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.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19474
A great white shark swims toward the photographer. Perhaps the shark is considering him as possible prey? The photographer, a "shark diver" is safely situated in a sturdy metal cage. The best location in the world to "shark dive" to view great white sharks is Mexico's Guadalupe Island.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19476
A great white shark swims toward the photographer. Perhaps the shark is considering him as possible prey? The photographer, a "shark diver" is safely situated in a sturdy metal cage. The best location in the world to "shark dive" to view great white sharks is Mexico's Guadalupe Island.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19480
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.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19481
Great white shark, research identification photograph. 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.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 28768
Pygmy falcon, the smallest raptor on the African continent, preys on insects and small reptiles and mammals.
Location: Meru National Park, Kenya
Image ID: 29706
Brown pelicans preening. After wiping its long beak on the uropygial gland near the base of its tail, the pelican spreads the preen oil on feathers about its body, helping to keep them water resistant, an important protection for a bird that spends much of its life diving in the ocean for prey. Adult winter non-breeding plumage showing white hindneck.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20089
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21612
Peregrine Falcon mated pair perform midair food exchange. The male forages for prey and returns to the nest, exchanging the prey in mid air with the female who in turn will feed the young at the nest, Torrey Pines State Natural Reserve.
Species: Peregrine Falcon, Falco peregrinus
Location: Torrey Pines State Reserve, San Diego, California
Image ID: 39325
Peregrine Falcon mated pair perform midair food exchange. The male forages for prey and returns to the nest, exchanging the prey in mid air with the female who in turn will feed the young at the nest, Torrey Pines State Natural Reserve.
Species: Peregrine Falcon, Falco peregrinus
Location: Torrey Pines State Reserve, San Diego, California
Image ID: 39331
Magellanic penguins, in grasslands at the opening of their underground burrow. Magellanic penguins can grow to 30" tall, 14 lbs and live over 25 years. They feed in the water, preying on cuttlefish, sardines, squid, krill, and other crustaceans.
Species: Magellanic penguin, Spheniscus magellanicus
Location: New Island, Falkland Islands, United Kingdom
Image ID: 23776
Brown pelican preening. After wiping its long beak on the uropygial gland near the base of its tail, the pelican spreads the preen oil on feathers about its body, helping to keep them water resistant, an important protection for a bird that spends much of its life diving in the ocean for prey. Adult winter non-breeding plumage showing white hindneck and red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20033
Magellanic penguins, in grasslands at the opening of their underground burrow. Magellanic penguins can grow to 30" tall, 14 lbs and live over 25 years. They feed in the water, preying on cuttlefish, sardines, squid, krill, and other crustaceans.
Species: Magellanic penguin, Spheniscus magellanicus
Location: New Island, Falkland Islands, United Kingdom
Image ID: 23774
Krill. Likely Euphausia pacifica. A thin cloud of pink krill gathers at the ocean surface, where it is likely to be preyed upon by sharks, fish, birds and whales.
Location: San Diego, California
Image ID: 27015
A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21609