Search results for Sexual Reproduction

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Antarctic fur seals, adult male bull and female, illustrating extreme sexual dimorphism common among pinnipeds (seals, sea lions and fur seals), Arctocephalus gazella, Right Whale Bay
Antarctic fur seals, adult male bull and female, illustrating extreme sexual dimorphism common among pinnipeds (seals, sea lions and fur seals).
Species: Antarctic fur seal, Arctocephalus gazella
Location: Right Whale Bay, South Georgia Island
Image ID: 24324  
Elephant seals in the surf, showing extreme dimorphism, males (5000 lb) are triple the size of females (1700 lb). Central California, Mirounga angustirostris, Piedras Blancas, San Simeon
Elephant seals in the surf, showing extreme dimorphism, males (5000 lb) are triple the size of females (1700 lb). Central California.
Species: Elephant seal, Mirounga angustirostris
Location: Piedras Blancas, San Simeon, California
Image ID: 15497  
Brown pelican spreads its large wings as it balances on a perch above the ocean, early morning light, displaying adult winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning, Pelecanus occidentalis, Pelecanus occidentalis californicus, La Jolla
Brown pelican spreads its large wings as it balances on a perch above the ocean, early morning light, displaying adult winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20283  
Brown pelican spreads its large wings as it balances on a perch above the ocean, early morning light, displaying adult winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning, Pelecanus occidentalis, Pelecanus occidentalis californicus, La Jolla
Brown pelican spreads its large wings as it balances on a perch above the ocean, early morning light, displaying adult winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20291  
A male sockeye salmon, showing injuries sustained as it migrated hundreds of miles from the ocean up the Fraser River, swims upstream in the Adams River to reach the place where it will fertilize eggs laid by a female in the rocks. It will die so after spawning, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
A male sockeye salmon, showing injuries sustained as it migrated hundreds of miles from the ocean up the Fraser River, swims upstream in the Adams River to reach the place where it will fertilize eggs laid by a female in the rocks. It will die so after spawning.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26174  
Adams River sockeye salmon. A female sockeye salmon swims upstream in the Adams River to spawn, having traveled hundreds of miles upstream from the ocean, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Adams River sockeye salmon. A female sockeye salmon swims upstream in the Adams River to spawn, having traveled hundreds of miles upstream from the ocean.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26175  
A school of sockeye salmon, swimming up the Adams River to spawn, where they will lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
A school of sockeye salmon, swimming up the Adams River to spawn, where they will lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26176  
Adams River sockeye salmon. A female sockeye salmon swims upstream in the Adams River to spawn, having traveled hundreds of miles upstream from the ocean, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Adams River sockeye salmon. A female sockeye salmon swims upstream in the Adams River to spawn, having traveled hundreds of miles upstream from the ocean.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26178  
Simnia and egg cluster on red gorgonian, Delonovolva aequalis, Leptogorgia chilensis, Lophogorgia chilensis, Anacapa Island
Simnia and egg cluster on red gorgonian.
Species: Red gorgonian, Simnia, Delonovolva aequalis, Leptogorgia chilensis, Lophogorgia chilensis
Location: Anacapa Island, California
Image ID: 01983  
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26392  
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26393  
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26394  
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26395  
A school of sockeye salmon, swimming up the Adams River to spawn, where they will lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
A school of sockeye salmon, swimming up the Adams River to spawn, where they will lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26414  
A school of sockeye salmon, swimming up the Adams River to spawn, where they will lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
A school of sockeye salmon, swimming up the Adams River to spawn, where they will lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26415  
Pelagic tunicate reproduction, large single salp produces a chain of smaller salps as it reproduces while adrift on the open ocean, Cyclosalpa affinis, San Diego, California
Pelagic tunicate reproduction, large single salp produces a chain of smaller salps as it reproduces while adrift on the open ocean.
Species: Salp, Cyclosalpa affinis
Location: San Diego, California
Image ID: 26842  
Krill and squid school at the ocean surface, moments before blue and fin whales rise to the surface to feed. The krill is likely Euphausia pacifica, the squid are likely Loligo opalescens. 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, Euphausia pacifica, Loligo opalescens, San Diego, California
Krill and squid school at the ocean surface, moments before blue and fin whales rise to the surface to feed. The krill is likely Euphausia pacifica, the squid are likely Loligo opalescens. 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.
Species: Common squid, Krill, Euphausia pacifica, Loligo opalescens
Location: San Diego, California
Image ID: 27152  
Brown pelican, showing bright red gular pouch and breeding plumage with brown neck. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning, Pelecanus occidentalis, Pelecanus occidentalis californicus, La Jolla
Brown pelican, showing bright red gular pouch and breeding plumage with brown neck. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 15153  
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, Mirounga angustirostris, Piedras Blancas, San Simeon
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.
Species: Elephant seal, Mirounga angustirostris
Location: Piedras Blancas, San Simeon, California
Image ID: 15411  
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, Mirounga angustirostris, Piedras Blancas, San Simeon
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.
Species: Elephant seal, Mirounga angustirostris
Location: Piedras Blancas, San Simeon, California
Image ID: 15447  
Brown pelican, winter plumage, showing bright red gular pouch and dark brown hindneck colors of breeding adults. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning, Pelecanus occidentalis, Pelecanus occidentalis californicus, La Jolla
Brown pelican, winter plumage, showing bright red gular pouch and dark brown hindneck colors of breeding adults. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20097  
Brown pelican, non-breeding winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning, Pelecanus occidentalis, Pelecanus occidentalis californicus, La Jolla
Brown pelican, non-breeding winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20101  
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, migrating upstream in the Adams River to return to the spot where they were hatched four years earlier, where they will spawn, lay eggs and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26184  
Sockeye salmon, swim upstream in the Adams River, traveling to reach the place where they hatched four years earlier in order to spawn a new generation of salmon eggs, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, swim upstream in the Adams River, traveling to reach the place where they hatched four years earlier in order to spawn a new generation of salmon eggs.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26181  
A sockeye salmon, a male sockeye dying on the edge of the Adams River, has completed its journey of hundreds of miles upstream inthe Fraser and Adams Rivers just to reach this spot, so that it can fertilize a females nest of eggs before dying, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
A sockeye salmon, a male sockeye dying on the edge of the Adams River, has completed its journey of hundreds of miles upstream inthe Fraser and Adams Rivers just to reach this spot, so that it can fertilize a females nest of eggs before dying.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26182  
Carcasses of dead sockeye salmon, line the edge of the Adams River. These salmon have already completed their spawning and have died, while other salmon are still swimming upstream and have yet to lay their eggs, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Carcasses of dead sockeye salmon, line the edge of the Adams River. These salmon have already completed their spawning and have died, while other salmon are still swimming upstream and have yet to lay their eggs.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26183  
Fall colors along Little Shuswap Lake, near the Adams River, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Fall colors along Little Shuswap Lake, near the Adams River.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26185  
The Adams River, at the Roderick Haig-Brown Provincial Park, British Columbia, Canada, Oncorhynchus nerka
The Adams River, at the Roderick Haig-Brown Provincial Park, British Columbia, Canada.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26188  
Sockeye salmon, swim upstream in the Adams River, traveling to reach the place where they hatched four years earlier in order to spawn a new generation of salmon eggs, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, swim upstream in the Adams River, traveling to reach the place where they hatched four years earlier in order to spawn a new generation of salmon eggs.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26189  
Sockeye salmon, swim upstream in the Adams River, traveling to reach the place where they hatched four years earlier in order to spawn a new generation of salmon eggs, Oncorhynchus nerka, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Sockeye salmon, swim upstream in the Adams River, traveling to reach the place where they hatched four years earlier in order to spawn a new generation of salmon eggs.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26190  
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