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Canyon X, a spectacular slot canyon near Page, Arizona. Slot canyons are formed when water and wind erode a cut through a (usually sandstone) mesa, producing a very narrow passage that may be as slim as a few feet and a hundred feet or more in height.
Location: Page, Arizona
Image ID: 36009  

Owl Canyon, a beautiful slot canyon that is part of the larger Antelope Canyon system. Page, Arizona.
Location: Navajo Tribal Lands, Page, Arizona
Image ID: 36030  

Belt of Venus and Earth Shadow at Dawn. The Belt of Venus is actually alpenglow visible near the horizon during twilight, above the antisolar point. Like alpenglow, the backscatter of reddened sunlight also creates the Belt of Venus. Unlike alpenglow, the sunlight scattered by fine particulates that cause the rosy arch of the Belt shines high in the atmosphere and lasts for a while after sunset or before sunrise.
Location: La Jolla, California
Image ID: 37476  

Young California Sea Lion Pup Looks at the Underwater Camera That Is Taking Its Photograph, in the Coronado Islands, Baja, Mexico. In this shallow cobblestone-strewn cove, sea lions often chase zebra perch two of which are seen in the background.
Species: California sea lion, Zalophus californianus
Location: Coronado Islands (Islas Coronado), Baja California, Mexico
Image ID: 39962  

South Pacific Humpback Whale Underwater, Moorea, French Polynesia.
Species: Humpback whale, Megaptera novaeangliae
Location: Moorea, French Polynesia, France
Image ID: 40636  

Inquisitive Calf South Pacific Humpback Whale Underwater, Moorea, French Polynesia.
Species: Humpback whale, Megaptera novaeangliae
Location: Moorea, French Polynesia, France
Image ID: 40643  

South Pacific Humpback Whale Underwater, showing all-white underside of the fluke and ventral caudal stem, Moorea, French Polynesia.
Species: Humpback whale, Megaptera novaeangliae
Location: Moorea, French Polynesia, France
Image ID: 40647  

Inquisitive Calf South Pacific Humpback Whale Underwater, Moorea, French Polynesia.
Species: Humpback whale, Megaptera novaeangliae
Location: Moorea, French Polynesia, France
Image ID: 40650  

South Pacific Humpback Whales and Short Finned Pilot Whales Underwater, Moorea, French Polynesia.
Species: Humpback whale, Shortfin pilot whale, Megaptera novaeangliae, Globicephala macrorhynchus
Location: Moorea, French Polynesia, France
Image ID: 40652  

South Pacific Humpback Whales Underwater, Moorea, French Polynesia.
Species: Humpback whale, Megaptera novaeangliae
Location: Moorea, French Polynesia, France
Image ID: 40661  

Mother, Calf and Escort South Pacific Humpback Whales Underwater, Moorea, French Polynesia.
Species: Humpback whale, Megaptera novaeangliae
Location: Moorea, French Polynesia, France
Image ID: 40679  

Sea lion scratches its back on underwater stones.
Species: California sea lion, Zalophus californianus
Location: Sea of Cortez, Baja California, Mexico
Image ID: 31243  

Adult male humpback whale singing, suspended motionless underwater. Only male humpbacks have been observed singing. All humpbacks in the North Pacific sing the same whale song each year, and the song changes slightly from one year to the next.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 02794  

Humpback whale competitive group, underwater, swimming quickly and one trailing a stream of bubbles.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 02854  

Large competitive group of humpback whales seen underwater.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 04462  

Adult male humpback whale bubble streaming underwater. The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a mother and calf. The bubble curtain may be meant as warning or visual obstruction to other nearby male whales interested in the mother.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 05928  

North Pacific humpback whales, part of a larger competitive group of humpbacks.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 05946  

Royal tern in flight, Thalasseus maximus, adult nonbreeding plumage, breaking waves in the background, La Jolla.
Species: Royal tern, Sterna maxima, Thalasseus maximus
Location: La Jolla, California
Image ID: 39772  

Royal tern in flight, Thalasseus maximus, adult nonbreeding plumage, breaking waves in the background, La Jolla.
Species: Royal tern, Sterna maxima, Thalasseus maximus
Location: La Jolla, California
Image ID: 39773  

A brown pelican preening, reaching with its beak to the uropygial gland (preen gland) near the base of its tail. Preen oil from the uropygial gland is spread by the pelican's beak and back of its head to all other feathers on the pelican, helping to keep them water resistant and dry. Adult winter breeding plumage.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 40020  

Male Brandt's Cormorant Skypointing, Courtship Display, Breeding Plumage with blue throat and a few white pin-feathers, La Jolla. Skypointing is an interesting courtship behavior that many birds practice. Among Brandt's Cormorants the male performs this, likely as a way of attracting a mate to the nest he has built by showing off his striking blue throat. He tips his head backward showing off his striking blue throat, and partially raises his wings. Seen here on seacliffs above the ocean.
Species: Brandt's cormorant, Phalacrocorax penicillatus
Location: La Jolla, California
Image ID: 40133  

Heermann's Gulls in Flight with Ocean Background.
Species: Heermann's Gull, Larus heermanni
Location: La Jolla, California
Image ID: 40164  

Royal Tern in flight, adult breeding plumage with black head cap, sea lions and waves in the background.
Species: Royal Tern, Sterna maxima, Thalasseus maximus
Location: La Jolla, California
Image ID: 40181  

A perfect Brown Pelican Head Throw with Distant Ocean in Background, bending backwards, stretching its neck and gular pouch, winter adult breeding plumage coloration.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 40252  

Common Dolphin Leaping, Breaching the Ocean Surface.
Species: Common dolphin, Delphinus delphis
Location: San Diego, California
Image ID: 40604  

Newborn Baby Common Dolphin Leaping. This tiny newborn dolphin is so young embryonic folds are still visible on its sides.
Species: Common dolphin, Delphinus delphis
Location: San Diego, California
Image ID: 40606  

Sunset on the Del Mar Bluffs and Train Tracks, with North County coastline. The highest peaks in the distance are Santiago Peak and Modjeska Peak, the pair commonly known as Saddleback.
Location: Del Mar, California
Image ID: 37604  

A California brown pelican preening, rubbing the back of its head and neck on the uropygial gland (preen gland) near the base of its tail. Preen oil from the uropygial gland is spread by the pelican's beak and back of its head to all other feathers on the pelican, helping to keep them water resistant and dry. Adult winter non-breeding plumage showing white hindneck and red gular throat pouch (but transitioning to brown hind neck).
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 37627  

A brown pelican preening, reaching with its beak to the uropygial gland (preen gland) near the base of its tail. Preen oil from the uropygial gland is spread by the pelican's beak and back of its head to all other feathers on the pelican, helping to keep them water resistant and dry.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 37693