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| Bigeye trevally jacks, motion blur, schooling. Image ID: 16347 Species: Bigeye jack, Caranx sexfasciatus Location: Darwin Island, Galapagos Islands, Ecuador | Black bear walking in a grassy meadow. Black bears can live 25 years or more, and range in color from deepest black to chocolate and cinnamon brown. Adult males typically weigh up to 600 pounds. Adult females weight up to 400 pounds and reach sexual maturity at 3 or 4 years of age. Adults stand about 3' tall at the shoulder. Image ID: 18744 Species: American black bear, Ursus americanus Location: Orr, Minnesota, USA | Black bear walking in a grassy meadow. Black bears can live 25 years or more, and range in color from deepest black to chocolate and cinnamon brown. Adult males typically weigh up to 600 pounds. Adult females weight up to 400 pounds and reach sexual maturity at 3 or 4 years of age. Adults stand about 3' tall at the shoulder. Image ID: 18741 Species: American black bear, Ursus americanus Location: Orr, Minnesota, USA |
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| Black bear walking in a grassy meadow. Black bears can live 25 years or more, and range in color from deepest black to chocolate and cinnamon brown. Adult males typically weigh up to 600 pounds. Adult females weight up to 400 pounds and reach sexual maturity at 3 or 4 years of age. Adults stand about 3' tall at the shoulder. Image ID: 18743 Species: American black bear, Ursus americanus Location: Orr, Minnesota, USA | Black bear walking in a grassy meadow. Black bears can live 25 years or more, and range in color from deepest black to chocolate and cinnamon brown. Adult males typically weigh up to 600 pounds. Adult females weight up to 400 pounds and reach sexual maturity at 3 or 4 years of age. Adults stand about 3' tall at the shoulder. Image ID: 18748 Species: American black bear, Ursus americanus Location: Orr, Minnesota, USA | Black bear walking in a grassy meadow. Black bears can live 25 years or more, and range in color from deepest black to chocolate and cinnamon brown. Adult males typically weigh up to 600 pounds. Adult females weight up to 400 pounds and reach sexual maturity at 3 or 4 years of age. Adults stand about 3' tall at the shoulder. Image ID: 18749 Species: American black bear, Ursus americanus Location: Orr, Minnesota, USA |
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| Brown bears fighting or sparring. These are likely young but sexually mature males that are simply mock fighting for practice. Image ID: 19148 Species: Brown bear, Ursus arctos Location: Lake Clark National Park, Alaska, USA | Gray whales, two males both with extended penis during courtship socialization, Laguna San Ignacio. Image ID: 06431 Species: Gray whale, Eschrichtius robustus Location: San Ignacio Lagoon, Baja California, Mexico | Bigeye Trevally Jacks, Schooling, Fiji. Image ID: 31365 Location: Namena Marine Reserve, Namena Island, Fiji |
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| Bigeye Trevally Jacks, Schooling, Fiji. Image ID: 31390 Location: Nigali Passage, Gau Island, Lomaiviti Archipelago, Fiji | A bull elephant seal forceably mates (copulates) with a much smaller female, often biting her into submission and using his weight to keep her from fleeing. Males may up to 5000 lbs, triple the size of females. Sandy beach rookery, winter, Central California. Image ID: 20388 Species: Elephant seal, Mirounga angustirostris Location: Piedras Blancas, San Simeon, California, USA | A bull elephant seal forceably mates (copulates) with a much smaller female, often biting her into submission and using his weight to keep her from fleeing. Males may up to 5000 lbs, triple the size of females. Sandy beach rookery, winter, Central California. Image ID: 15408 Species: Elephant seal, Mirounga angustirostris Location: Piedras Blancas, San Simeon, California, USA |
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| Black bear walking in a forest. Black bears can live 25 years or more, and range in color from deepest black to chocolate and cinnamon brown. Adult males typically weigh up to 600 pounds. Adult females weight up to 400 pounds and reach sexual maturity at 3 or 4 years of age. Adults stand about 3' tall at the shoulder. Image ID: 18751 Species: American black bear, Ursus americanus Location: Orr, Minnesota, USA | Brown bears fighting or sparring. These are likely young but sexually mature males that are simply mock fighting for practice. Image ID: 19177 Species: Brown bear, Ursus arctos Location: Lake Clark National Park, Alaska, USA | Brown bears fighting or sparring. These are likely young but sexually mature males that are simply mock fighting for practice. Image ID: 19250 Species: Brown bear, Ursus arctos Location: Lake Clark National Park, Alaska, USA |
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| Schooling fish, circling jacks, Las Animas, Sea of Cortez, Baja California. Image ID: 00249 Species: Bigeye jack, Caranx sexfasciatus | Circling jacks. Image ID: 06124 Species: Bigeye jack, Caranx sexfasciatus Location: Cocos Island, Costa Rica | Bigeye Trevally, Bigeye Jacks, Caranx sexfasciatus, Clipperton Island. Image ID: 32953 Location: Clipperton Island, France |
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| Graybar Grunt, Haemulon sexfasciatum, Sea of Cortez. Image ID: 33635 Location: Isla San Francisquito, Baja California, Mexico | Bigeye Trevally, Bigeye Jacks, Caranx sexfasciatus, Clipperton Island. Image ID: 33021 Location: Clipperton Island, France | Bigeye Trevally, Bigeye Jacks, Caranx sexfasciatus, Clipperton Island. Image ID: 33042 Location: Clipperton Island, France |
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| Bigeye Trevally, Bigeye Jacks, Caranx sexfasciatus, Clipperton Island. Image ID: 33056 Location: Clipperton Island, France | Lions mating, Maasai Mara National Reserve, Kenya. Image ID: 29891 Species: African Lion, Panthera leo Location: Maasai Mara National Reserve, Kenya | Antarctic fur seals, adult male bull and female, illustrating extreme sexual dimorphism common among pinnipeds (seals, sea lions and fur seals). Image ID: 24324 Species: Antarctic Fur Seal, Arctocephalus gazella Location: Right Whale Bay, South Georgia Island |
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| Elephant seals in the surf, showing extreme dimorphism, males (5000 lb) are triple the size of females (1700 lb). Central California. Image ID: 15497 Species: Elephant seal, Mirounga angustirostris Location: Piedras Blancas, San Simeon, California, USA | Common Ostrich mating. Image ID: 29572 Species: Common Ostrich, Struthio camelus Location: Amboseli National Park, Kenya | Bigeye trevally jacks, schooling. Image ID: 16346 Species: Bigeye jack, Caranx sexfasciatus Location: Darwin Island, Galapagos Islands, Ecuador |
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| A bull elephant seal forceably mates (copulates) with a much smaller female, often biting her into submission and using his weight to keep her from fleeing. Males may up to 5000 lbs, triple the size of females. Sandy beach rookery, winter, Central California. Image ID: 15411 Species: Elephant seal, Mirounga angustirostris Location: Piedras Blancas, San Simeon, California, USA | A bull elephant seal forceably mates (copulates) with a much smaller female, often biting her into submission and using his weight to keep her from fleeing. Males may up to 5000 lbs, triple the size of females. Sandy beach rookery, winter, Central California. Image ID: 15447 Species: Elephant seal, Mirounga angustirostris Location: Piedras Blancas, San Simeon, California, USA | Scissortail sergeant major. Image ID: 12939 Species: Scissortail sergeant major, Abudefduf sexfasciatus |
Natural History Photography Blog posts (20) related to Sex
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