Search results for Dorsal

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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, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe)
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 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)
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 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)
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  
Rissos dolphin surfacing with eye showing. Note distinguishing and highly variable skin and dorsal fin patterns, characteristic of this species. White scarring, likely caused by other Risso dolphins teeth, accumulates during the dolphins life so that adult Rissos dolphins are almost entirely white.  San Diego, Grampus griseus
Rissos dolphin surfacing with eye showing. Note distinguishing and highly variable skin and dorsal fin patterns, characteristic of this species. White scarring, likely caused by other Risso dolphins teeth, accumulates during the dolphins life so that adult Rissos dolphins are almost entirely white. San Diego.
Species: Risso's dolphin, Grampus griseus
Location: San Diego, California
Image ID: 02314  
Rissos dolphin, breaching. Note distinguishing and highly variable skin and dorsal fin patterns, characteristic of this species. White scarring, likely caused by other Risso dolphins teeth, accumulates during the dolphins life so that adult Rissos dolphins are almost entirely white. San Diego, Grampus griseus
Rissos dolphin, breaching. Note distinguishing and highly variable skin and dorsal fin patterns, characteristic of this species. White scarring, likely caused by other Risso dolphins teeth, accumulates during the dolphins life so that adult Rissos dolphins are almost entirely white. San Diego.
Species: Risso's dolphin, Grampus griseus
Location: San Diego, California
Image ID: 00983  
A Rissos dolphin leaps from the ocean in a full breach. Note distinguishing and highly variable skin and dorsal fin patterns, characteristic of this species.  White scarring, likely caused by other Risso dolphins teeth, accumulates during the dolphins life so that adult Rissos dolphins are almost entirely white.  Offshore near San Diego, Grampus griseus
A Rissos dolphin leaps from the ocean in a full breach. Note distinguishing and highly variable skin and dorsal fin patterns, characteristic of this species. White scarring, likely caused by other Risso dolphins teeth, accumulates during the dolphins life so that adult Rissos dolphins are almost entirely white. Offshore near San Diego.
Species: Risso's dolphin, Grampus griseus
Location: San Diego, California
Image ID: 07597  
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia.  Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia, Phycodurus eques, Rapid Bay Jetty
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia. Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia.
Species: Leafy seadragon, Phycodurus eques
Location: Rapid Bay Jetty, South Australia
Image ID: 39132  
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia.  Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia, Phycodurus eques, Rapid Bay Jetty
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia. Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia.
Species: Leafy seadragon, Phycodurus eques
Location: Rapid Bay Jetty, South Australia
Image ID: 39135  
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia.  Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia, Phycodurus eques, Rapid Bay Jetty
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia. Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia.
Species: Leafy seadragon, Phycodurus eques
Location: Rapid Bay Jetty, South Australia
Image ID: 39138  
Fin whale dorsal fin.  The fin whale is named for its tall, falcate dorsal fin.  Mariners often refer to them as finback whales.  Coronado Islands, Mexico (northern Baja California, near San Diego), Balaenoptera physalus, Coronado Islands (Islas Coronado)
Fin whale dorsal fin. The fin whale is named for its tall, falcate dorsal fin. Mariners often refer to them as finback whales. Coronado Islands, Mexico (northern Baja California, near San Diego).
Species: Fin whale, Balaenoptera physalus
Location: Coronado Islands (Islas Coronado), Baja California, Mexico
Image ID: 12771  
An enormous blue whale rounds out (hunches up its back) before diving.  Note the distinctive mottled skin pattern and small, falcate dorsal fin. Open ocean offshore of San Diego, Balaenoptera musculus
An enormous blue whale rounds out (hunches up its back) before diving. Note the distinctive mottled skin pattern and small, falcate dorsal fin. Open ocean offshore of San Diego.
Species: Blue whale, Balaenoptera musculus
Location: San Diego, California
Image ID: 07573  
An enormous blue whale rounds out (hunches up its back) before diving.  Note the distinctive mottled skin pattern and small, falcate dorsal fin. Open ocean offshore of San Diego, Balaenoptera musculus
An enormous blue whale rounds out (hunches up its back) before diving. Note the distinctive mottled skin pattern and small, falcate dorsal fin. Open ocean offshore of San Diego.
Species: Blue whale, Balaenoptera musculus
Location: San Diego, California
Image ID: 07577  
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, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe)
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  
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico, Dipsosaurus dorsalis, Joshua Tree National Park, California
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico.
Species: Northern desert iguana, Dipsosaurus dorsalis
Location: Joshua Tree National Park, California
Image ID: 26728  
Gray whale dorsal ridge (back) at the surface in front of a boat full of whale watchers, Cow Bay, Flores Island, near Tofino, Clayoquot Sound, west coast of Vancouver Island, Eschrichtius robustus
Gray whale dorsal ridge (back) at the surface in front of a boat full of whale watchers, Cow Bay, Flores Island, near Tofino, Clayoquot Sound, west coast of Vancouver Island.
Species: Gray whale, Eschrichtius robustus
Location: Cow Bay, Flores Island, British Columbia, Canada
Image ID: 21180  
Giant damselfish juvenile, Sea of Cortez, Isla Las Animas, Baja California, Mexico
Giant damselfish juvenile, Sea of Cortez.
Location: Isla Las Animas, Baja California, Mexico
Image ID: 33687  
Giant damselfish, Sea of Cortez, Baja California, Mexico, Punta Alta
Giant damselfish, Sea of Cortez, Baja California, Mexico.
Location: Punta Alta, Baja California, Mexico
Image ID: 33733  
Saddle patch and dorsal fin of a killer whale, Palos Verdes, Orcinus orca
Saddle patch and dorsal fin of a killer whale, Palos Verdes.
Species: Killer whale, Orcinus orca
Location: Palos Verdes, California
Image ID: 30434  
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico, Dipsosaurus dorsalis, Joshua Tree National Park, California
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico.
Species: Northern desert iguana, Dipsosaurus dorsalis
Location: Joshua Tree National Park, California
Image ID: 26735  
North Pacific Yellowtail at Guadalupe Island, Mexico, Seriola lalandi, Guadalupe Island (Isla Guadalupe)
North Pacific Yellowtail at Guadalupe Island, Mexico.
Species: North Pacific Yellowtail, Seriola lalandi
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 05188  
Blade Runner, the injured North Pacific humpback whale, is seen with her calf swimming alongside. This humpback whale showing extensive scarring, almost certainly from a boat propeller, on dorsal ridge.  This female North Pacific humpback whale was first seen with the depicted lacerations near the island of Maui in the Hawaiian Islands in the mid-90s, and is the original humpback to bear the name 'Blade Runner'. This female has apparently recovered, as evidenced by her calf in the background. A South Pacific humpback whale endured a similar injury in Sydney Australia in 2001, and bears a remarkably similar scar pattern to the above-pictured whale, Megaptera novaeangliae
Blade Runner, the injured North Pacific humpback whale, is seen with her calf swimming alongside. This humpback whale showing extensive scarring, almost certainly from a boat propeller, on dorsal ridge. This female North Pacific humpback whale was first seen with the depicted lacerations near the island of Maui in the Hawaiian Islands in the mid-90s, and is the original humpback to bear the name 'Blade Runner'. This female has apparently recovered, as evidenced by her calf in the background. A South Pacific humpback whale endured a similar injury in Sydney Australia in 2001, and bears a remarkably similar scar pattern to the above-pictured whale.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 05907  
North Pacific Yellowtail school under a patch of drift kelp, open ocean, Seriola lalandi, San Diego, California
North Pacific Yellowtail school under a patch of drift kelp, open ocean.
Species: North pacific yellowtail, Yellowtail, Kingfish, Seriola lalandi
Location: San Diego, California
Image ID: 07000  
Silky shark, dorsal fin breaking surface, Carcharhinus falciformis, Cocos Island
Silky shark, dorsal fin breaking surface.
Species: Silky shark, Carcharhinus falciformis
Location: Cocos Island, Costa Rica
Image ID: 05014  
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia.  Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia, Phycodurus eques, Rapid Bay Jetty
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia. Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia.
Species: Leafy seadragon, Phycodurus eques
Location: Rapid Bay Jetty, South Australia
Image ID: 39133  
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia.  Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia, Phycodurus eques, Rapid Bay Jetty
The leafy seadragon (Phycodurus eques) is found on the southern and western coasts of Australia. Its extravagent appendages serve only for camoflage, since it has a nearly-invisible dorsal fin that propels it slowly through the water. The leafy sea dragon is the marine emblem of South Australia.
Species: Leafy seadragon, Phycodurus eques
Location: Rapid Bay Jetty, South Australia
Image ID: 39136  
Gray whale dorsal aspect showing blowhole and characteristic skin mottling and ectoparasitic barnacles and whale lice (amphipod crustaceans), Eschrichtius robustus, San Diego, California
Gray whale dorsal aspect showing blowhole and characteristic skin mottling and ectoparasitic barnacles and whale lice (amphipod crustaceans).
Species: Gray whale, Eschrichtius robustus
Location: San Diego, California
Image ID: 30456  
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico, Dipsosaurus dorsalis, Joshua Tree National Park, California
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico.
Species: Northern desert iguana, Dipsosaurus dorsalis
Location: Joshua Tree National Park, California
Image ID: 26755  
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico, Dipsosaurus dorsalis, Joshua Tree National Park, California
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico.
Species: Northern desert iguana, Dipsosaurus dorsalis
Location: Joshua Tree National Park, California
Image ID: 26761  
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico, Dipsosaurus dorsalis, Joshua Tree National Park, California
Desert iguana, one of the most common lizards of the Sonoran and Mojave deserts of the southwestern United States and northwestern Mexico.
Species: Northern desert iguana, Dipsosaurus dorsalis
Location: Joshua Tree National Park, California
Image ID: 26769  
Giant damselfish, Sea of Cortez, Baja California, Mexico, Microspathodon dorsalis
Giant damselfish, Sea of Cortez, Baja California, Mexico.
Species: Giant damselfish, Microspathodon dorsalis
Location: Sea of Cortez, Baja California, Mexico
Image ID: 27497  
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