Grand Prismatic Spring (left) and Excelsior Geyser (right). Grand Prismatic Spring displays a stunning rainbow of colors created by species of thermophilac (heat-loving) bacteria that thrive in narrow temperature ranges. The blue water in the center is too hot to support any bacterial life, while the outer orange rings are the coolest water. Grand Prismatic Spring is the largest spring in the United States and the third-largest in the world. Midway Geyser Basin.
Location: Midway Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13571
Bristlecone pine displays its characteristic gnarled, twisted form as it rises above the arid, dolomite-rich slopes of the White Mountains at 11000-foot elevation. Patriarch Grove, Ancient Bristlecone Pine Forest.
Species: Bristlecone Pine, Pinus longaeva
Location: White Mountains, Inyo National Forest, California
Image ID: 17475
Anthias fishes school in strong currents over a Fijian coral reef, with various hard and soft corals, sea fans and anemones on display. Fiji.
Species: Anthias, Pseudanthias
Location: Fiji
Image ID: 34741
Western Grebes rushing in a courtship display. Rushiing grebes run across the water 60 feet (20m) or further with their feet hitting the water as rapidly as 20 times per second. Lake Hodges, San Diego.
Species: Western grebe, Aechmophorus occidentalis
Image ID: 36888
Male Brandt's Cormorant Skypointing, Courtship Display, Breeding Plumage with blue throat and 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
Image ID: 36801
Racetrack sailing stone and star trails. A sliding rock of the Racetrack Playa. The sliding rocks, or sailing stones, move across the mud flats of the Racetrack Playa, leaving trails behind in the mud. The explanation for their movement is not known with certainty, but many believe wind pushes the rocks over wet and perhaps icy mud in winter.
Location: Racetrack Playa, Death Valley National Park, California
Image ID: 27671
Sailing stone on the Racetrack Playa. The sliding rocks, or sailing stones, move across the mud flats of the Racetrack Playa, leaving trails behind in the mud. The explanation for their movement is not known with certainty, but many believe wind pushes the rocks over wet and perhaps icy mud in winter.
Location: Racetrack Playa, Death Valley National Park, California
Image ID: 27689
Sunrise on Medano Beach, on the coast of Cabo San Lucas, Mexico.
Location: Cabo San Lucas, Baja California, Mexico
Image ID: 28948
Panorama dimensions: 4368 x 16027
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 female (left) during a competitive group. The bubble curtain may be meant as warning or visual obstruction to other male whales interested in the mother.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 02828
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: 05925
Courting group of southern right whales, aerial photo. Mating may occur as a result of this courting and social behavior. The white whale seen here is a serious player named El Copulador (the copulator) and is often seen in mating and courting groups of southern right whales at Peninsula Valdes. His light coloration is an indication that he was a white calf, but he did not darken as he aged in the way most white southern right whale calves do.
Species: Southern Right Whale, Eubalaena australis
Location: Puerto Piramides, Chubut, Argentina
Image ID: 38357
Western Grebes rushing in a courtship display. Rushiing grebes run across the water 60 feet (20m) or further with their feet hitting the water as rapidly as 20 times per second. Lake Hodges, San Diego.
Species: Western grebe, Aechmophorus occidentalis
Image ID: 36887
Western Grebes rushing in a courtship display. Rushiing grebes run across the water 60 feet (20m) or further with their feet hitting the water as rapidly as 20 times per second. Lake Hodges, San Diego.
Species: Western grebe, Aechmophorus occidentalis
Image ID: 36889
Adult California brown pelican in transition from non-breeding to breeding winter plumage. Note the brown hind neck of a breeding brown pelican is just filling in. This pelican already displays the red and olive throat and white and yellow head feathers of an adult winter brown pelican.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 38679