Ancient bristlecone pine tree, roots spread wide and exposed over dolomite-rich soil, rising above the arid slopes of the Schulman Grove in the White Mountains at an elevation of 9500 above sea level, along the Methuselah Walk. The oldest bristlecone pines in the world are found in the Schulman Grove, some of them over 4700 years old. Ancient Bristlecone Pine Forest.
Species: Bristlecone pine, Pinus longaeva
Location: White Mountains, Inyo National Forest, California
Image ID: 23234
Glacial erratic boulders atop Olmsted Point, with the massive granite monoliths Half Dome and Clouds Rest in the background. Erratics are huge boulders left behind by the passing of glaciers which carved the granite surroundings into their present-day form. When the glaciers melt, any boulders and other geologic material that it was carrying are left in place, sometimes many miles from their original location.
Location: Yosemite National Park, California
Image ID: 23264
Desert agave, also known as the Century Plant, blooms in spring in Anza-Borrego Desert State Park. Desert agave is the only agave species to be found on the rocky slopes and flats bordering the Coachella Valley. It occurs over a wide range of elevations from 500 to over 4,000. It is called century plant in reference to the amount of time it takes it to bloom. This can be anywhere from 5 to 20 years. They send up towering flower stalks that can approach 15 feet in height. Sending up this tremendous display attracts a variety of pollinators including bats, hummingbirds, bees, moths and other insects and nectar-eating birds.
Species: Desert agave, Agave deserti
Image ID: 11550
Bull elk, antlers bearing velvet, Gibbon Meadow. Elk are the most abundant large mammal found in Yellowstone National Park. More than 30,000 elk from 8 different herds summer in Yellowstone and approximately 15,000 to 22,000 winter in the park. Bulls grow antlers annually from the time they are nearly one year old. When mature, a bulls rack may have 6 to 8 points or tines on each side and weigh more than 30 pounds. The antlers are shed in March or April and begin regrowing in May, when the bony growth is nourished by blood vessels and covered by furry-looking velvet.
Species: Elk, Cervus canadensis
Location: Gibbon Meadows, Yellowstone National Park, Wyoming
Image ID: 13154
Morning Glory Pool has long been considered a must-see site in Yellowstone. At one time a road brought visitors to its brink. Over the years they threw coins, bottles and trash in the pool, reducing its flow and causing the red and orange bacteria to creep in from its edge, replacing the blue bacteria that thrive in the hotter water at the center of the pool. The pool is now accessed only by a foot path. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13352
A visitor videotapes the eruption of Lion Geyser, with Old Faithful Inn visible in the distance. Lion Geyser, whose eruption is preceded by a release of steam that sounds like a lion roaring, erupts just once or a few times each day, reaching heights of up to 90 feet. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13371
Sawmill Geyser erupting. Sawmill Geyser is a fountain-type geyser and, in some circumstances, can be erupting about one-third of the time up to heights of 35 feet. Upper Geyser Basin.
Location: Upper Geyser Basin, Yellowstone National Park, Wyoming
Image ID: 13385
The Star of India is tied to her dock along the waterfront of San Diego harbor.
Location: San Diego, California
Image ID: 14530
Yosemite Falls rises above Cooks Meadow. The 2425 falls, the tallest in North America, is at peak flow during a warm-weather springtime melt of Sierra snowpack. Yosemite Valley.
Location: Yosemite Falls, Yosemite National Park, California
Image ID: 16141
A bull sea lion shows a brand burned into its hide by the Oregon Department of Fish and Wildlife, to monitor it from season to season as it travels between California, Oregon and Washington. Some California sea lions, such as this one C-704, prey upon migrating salmon that gather in the downstream waters and fish ladders of Bonneville Dam on the Columbia River. The "C" in its brand denotes Columbia River. These sea lions also form bachelor colonies that haul out on public docks in Astoria's East Mooring Basin and elsewhere, where they can damage or even sink docks.
Species: California sea lion, Zalophus californianus
Location: Columbia River, Astoria, Oregon
Image ID: 19419
Sea lion head profile, showing small external ear, prominant forehead typical of adult males, whiskers. This sea lion is hauled out on public docks in Astoria's East Mooring Basin. This bachelor colony of adult males takes up residence for several weeks in late summer on public docks in Astoria after having fed upon migrating salmon in the Columbia River. The sea lions can damage or even sink docks and some critics feel that they cost the city money in the form of lost dock fees.
Species: California sea lion, Zalophus californianus
Location: Columbia River, Astoria, Oregon
Image ID: 19420
Male elephant seals (bulls) rear up on their foreflippers and fight for territory and harems of females. Bull elephant seals will haul out and fight from December through March, nearly fasting the entire time as they maintain their territory and harem. They bite and tear at each other on the neck and shoulders, drawing blood and creating scars on the tough hides.
Species: Elephant seal, Mirounga angustirostris
Location: Piedras Blancas, San Simeon, California
Image ID: 20371
A garibaldi fish (orange), surf grass (green) and palm kelp (brown) on the rocky reef -- all appearing blurred in this time exposure -- are tossed back and forth by powerful ocean waves passing by above. San Clemente Island.
Species: Surfgrass, Hypsypops rubicundus, Phyllospadix
Location: San Clemente Island, California
Image ID: 10238
Falling bluffs and reinforcements, buttressing, Encinitas and Leucadia. These bluffs are coming down, its only a matter of time, but residents spend to prop up the bluffs and keep their homes from falling into the ocean.
Location: Encinitas, California
Image ID: 37971
Fantastic colorful sedimentary patterns, Bentonite layers are seen as striations exposed in the Utah Badlands, part of the Brushy Basin shale member of the Morrison Formation. This layer was formed during Jurassic times when mud, silt, fine sand, and volcanic ash were deposited in swamps and lakes. Aerial photograph.
Location: Utah
Image ID: 38019
Fantastic colorful sedimentary patterns of Bentonite layers, seen as striations exposed in the Utah Badlands. The Bentonite Hills are composed of the Brushy Basin shale member of the Morrison Formation formed during Jurassic times when mud, silt, fine sand, and volcanic ash were deposited in swamps and lakes into layers, now revealed through erosion. Aerial photograph.
Location: Utah
Image ID: 38067
Falling bluffs and reinforcements, buttressing, Encinitas and Leucadia. These bluffs are coming down, its only a matter of time, but residents spend to prop up the bluffs and keep their homes from falling into the ocean.
Location: Encinitas, California
Image ID: 38140
The Great Wall, Navajo Tribal Lands, Arizona. Sandstone "fins", eroded striations that depict how sandstone -- ancient compressed sand -- was laid down in layers over time. Now exposed, the layer erode at different rates, forming delicate "fins" that stretch for long distances.
Location: Navajo Tribal Lands, Page, Arizona
Image ID: 26644