Search results for Sexual Reproduction

California grunion.
Species: California grunion, Leuresthes tenuis
Location: Carlsbad, California
Image ID: 09302  

California grunion.
Species: California grunion, Leuresthes tenuis
Location: Carlsbad, California
Image ID: 09306  

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: 20086  

A sockeye salmon swims in the shallows of the Adams River, with the surrounding forest visible in this split-level over-under photograph.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26150  

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: 26159  

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: 26160  

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 soon after spawning.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26162  

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: 26172  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22147  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22151  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22152  

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: 20084  

Brown pelican spreads its large wings as it balances on a perch above the ocean, 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: 20265  

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: 20300  

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: 26820  

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: 26821  

Brown pelican, winter adult breeding plumage, showing bright red gular pouch and dark brown hindneck plumage 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: 23637  

Brown pelican, winter adult breeding plumage, showing bright red gular pouch and dark brown hindneck plumage 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: 23639  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22158  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22164  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 15128  

Brown pelicans, breeding plumage (left) and non-breeding adult (right), sunrise. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 18047  

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. 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: 20090  

Brown pelican spreads its large wings as it balances on a perch above the ocean, 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: 20261  

Sockeye salmon, swimming upstream in the shallow waters of the Adams River. When they reach the place where they hatched from eggs four years earlier, they will spawn and die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26173  

Two male sockeye salmon, swimming together against the current of the Adams River. After four years of life and two migrations of the Fraser and Adams Rivers, they will soon fertilize a female's eggs and then die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26179  

Two male sockeye salmon, swimming together against the current of the Adams River. After four years of life and two migrations of the Fraser and Adams Rivers, they will soon fertilize a female's eggs and then die.
Species: Sockeye salmon, Oncorhynchus nerka
Location: Adams River, Roderick Haig-Brown Provincial Park, British Columbia, Canada
Image ID: 26180  

Brown pelican, winter adult breeding plumage, showing bright red gular pouch and dark brown hindneck plumage 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: 37632  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22165  

Brown pelican. 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. In winter months, breeding adults assume a dramatic plumage with brown neck, yellow and white head and bright red gular throat pouch.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 22175