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| Full grown, mature male coastal brown bear boar (grizzly bear) in sedge grass meadows. Image ID: 19134 Species: Brown bear, Ursus arctos Location: Lake Clark National Park, Alaska, USA | 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. Image ID: 17475 Species: Bristlecone Pine, Pinus longaeva Location: White Mountains, Inyo National Forest, California, USA | Bryozoan grows on a red gorgonian on rocky reef, below kelp forest, underwater. The red gorgonian is a filter-feeding temperate colonial species that lives on the rocky bottom at depths between 50 to 200 feet deep. Gorgonians are oriented at right angles to prevailing water currents to capture plankton drifting by. Image ID: 25395 Species: Red gorgonian, Lophogorgia chilensis Location: San Clemente Island, California, USA |
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| Stars and the Milky Way rise above ancient bristlecone pine trees, in the White Mountains at an elevation of 10,000' above sea level. These are some of the oldest trees in the world, reaching 4000 years in age. Image ID: 27772 Species: Bristlecone Pine, Pinus longaeva Location: Ancient Bristlecone Pine Forest, White Mountains, Inyo National Forest, California, USA | Giant redwood, Lady Bird Johnson Grove, Redwood National Park. The coastal redwood, or simply 'redwood', is the tallest tree on Earth, reaching a height of 379' and living 3500 years or more. It is native to coastal California and the southwestern corner of Oregon within the United States, but most concentrated in Redwood National and State Parks in Northern California, found close to the coast where moisture and soil conditions can support its unique size and growth requirements. Image ID: 25795 Species: Coast redwood, giant redwood, California redwood, Sequoia sempervirens Location: Redwood National Park, California, USA | The bisons massive head is its most characteristic feature. Its forehead bulges because of its convex-shaped frontal bone. Its shoulder hump, dwindling bowlike to the haunches, is supported by unusually long spinal vertebrae. Over powerful neck and shoulder muscles grows a great shaggy coat of curly brown fur, and over the head, like an immense hood, grows a shock of black hair. Its forequarters are higher and much heavier than its haunches. A mature bull stands about 6 1/2 feet (2 meters) at the shoulder and weighs more than 2,000 pounds (900 kilograms). The bisons horns are short and black. In the male they are thick at the base and taper abruptly to sharp points as they curve outward and upward; the females horns are more slender. Image ID: 13120 Species: American bison, Bison bison Location: Yellowstone National Park, Wyoming, USA |
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| Sol Duc Falls. Sol Duc Falls is one of the largest and most beautiful waterfalls in Olympic National Park, seen here from a bridge that crosses the canyon just below the falls. Surrounding the falls is an old-growth forest of hemlocks and douglas firs, some of which are three hundred years in age. Image ID: 13747 Location: Sol Duc Springs, Olympic National Park, Washington, USA | Full grown, mature male coastal brown bear boar (grizzly bear) in sedge grass meadows. Image ID: 19151 Species: Brown bear, Ursus arctos Location: Lake Clark National Park, Alaska, USA | Full grown, mature male coastal brown bear boar (grizzly bear) in sedge grass meadows. Image ID: 19161 Species: Brown bear, Ursus arctos Location: Lake Clark National Park, Alaska, USA |
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| Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest. Image ID: 25890 Species: Roosevelt elk, Cervus canadensis roosevelti Location: Redwood National Park, California, USA | Kelp fronds and pneumatocysts. Pneumatocysts, gas-filled bladders, float the kelp plant off the ocean bottom toward the surface and sunlight, where the leaf-like blades and stipes of the kelp plant grow fastest. Giant kelp can grow up to 2' in a single day given optimal conditions. Epic submarine forests of kelp grow throughout California's Southern Channel Islands. Image ID: 25396 Species: Giant kelp, Macrocystis pyrifera Location: San Clemente Island, California, USA | Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest. Image ID: 25878 Species: Roosevelt elk, Cervus canadensis roosevelti Location: Redwood National Park, California, USA |
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| Ancient bristlecone pine tree, rising above the arid, dolomite-rich 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. Image ID: 23233 Species: Bristlecone Pine, Pinus longaeva Location: White Mountains, Inyo National Forest, California, USA | Southern humpback whale in Antarctica, with significant diatomaceous growth (brown) on the underside of its fluke, lifting its fluke before diving in Neko Harbor, Antarctica. Image ID: 25647 Species: Humpback whale, Megaptera novaeangliae Location: Neko Harbor, Antarctic Peninsula, Antarctica | Stars and the Milky Way rise above ancient bristlecone pine trees, in the White Mountains at an elevation of 10,000' above sea level. These are some of the oldest trees in the world, reaching 4000 years in age. Image ID: 27775 Species: Bristlecone Pine, Pinus longaeva Location: Ancient Bristlecone Pine Forest, White Mountains, Inyo National Forest, California, USA |
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| A hiker admires an ancient bristlecone pine tree, on the Methuselah Walk in the Schulman Grove in the White Mountains at an elevation of 9500 above sea level. The oldest bristlecone pines in the world are found in the Schulman Grove, some of them over 4700 years old. Ancient Bristlecone Pine Forest. Image ID: 23232 Species: Bristlecone Pine, Pinus longaeva Location: White Mountains, Inyo National Forest, California, USA | Eureka dune grass, and rare and federally endangered species of grass endemic to the Eureka Valley and Eureka Sand Dunes. The Last Chance mountains, lit by sunset, as visible in the distance. Swallenia alexandrae, a perennial grass, grows only in the southern portion of Eureka Valley Sand Dunes, in Inyo County, California. Image ID: 25358 Species: Eureka Valley dune grass, Eureka dunegrass, Swallenia alexandrae Location: Eureka Dunes, Death Valley National Park, California, USA | Marine iguana, underwater, forages for green algae that grows on the lava reef. Image ID: 16227 Species: Marine iguana, Amblyrhynchus cristatus Location: Bartolome Island, Galapagos Islands, Ecuador |
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| Ancient bristlecone pine tree in the White Mountains, at an elevation of 10,000' above sea level. These are some of the oldest trees in the world, reaching 4000 years in age. Image ID: 27761 Species: Bristlecone Pine, Pinus longaeva Location: Ancient Bristlecone Pine Forest, White Mountains, Inyo National Forest, California, USA | Stars and the Milky Way rise above ancient bristlecone pine trees, in the White Mountains at an elevation of 10,000' above sea level. These are some of the oldest trees in the world, reaching 4000 years in age. Image ID: 27776 Species: Bristlecone Pine, Pinus longaeva Location: Ancient Bristlecone Pine Forest, White Mountains, Inyo National Forest, California, USA | Stars and the Milky Way rise above ancient bristlecone pine trees, in the White Mountains at an elevation of 10,000' above sea level. These are some of the oldest trees in the world, reaching 4000 years in age. Image ID: 27780 Species: Bristlecone Pine, Pinus longaeva Location: Ancient Bristlecone Pine Forest, White Mountains, Inyo National Forest, California, USA |
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| Stars and the Milky Way rise above ancient bristlecone pine trees, in the White Mountains at an elevation of 10,000' above sea level. These are some of the oldest trees in the world, reaching 4000 years in age. Image ID: 27782 Species: Bristlecone Pine, Pinus longaeva Location: Ancient Bristlecone Pine Forest, White Mountains, Inyo National Forest, California, USA | 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. Image ID: 23234 Species: Bristlecone Pine, Pinus longaeva Location: White Mountains, Inyo National Forest, California, USA | 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. Image ID: 13154 Species: Elk, Cervus canadensis Location: Gibbon Meadows, Yellowstone National Park, Wyoming, USA |
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| Wolf eel, although similar in shape to eels, is cartilaginous and not a true fish. Its powerful jaws can crush invertibrates, such as spiny sea urchins. It can grow to 6 feet (2m) in length. Image ID: 13702 Species: Wolf eel, Anarrhichthys ocellatus | Sol Duc Falls. Sol Duc Falls is one of the largest and most beautiful waterfalls in Olympic National Park, seen here from a bridge that crosses the canyon just below the falls. Surrounding the falls is an old-growth forest of hemlocks and douglas firs, some of which are three hundred years in age. Image ID: 13748 Location: Sol Duc Springs, Olympic National Park, Washington, USA | Old growth forest of douglas firs and hemlocks, with forest floor carpeted in ferns and mosses. Sol Duc Springs. Image ID: 13757 Location: Sol Duc Springs, Olympic National Park, Washington, USA |
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| Marymere Falls cascades 90 feet through an old-growth forest of Douglas firs, near Lake Crescent. Image ID: 13765 Location: Lake Crescent, Olympic National Park, Washington, USA | Marymere Falls drops 90 feet through an old-growth forest of Douglas firs, near Lake Crescent. Image ID: 13768 Location: Lake Crescent, Olympic National Park, Washington, USA | Bristlecone pine rising above the arid, dolomite-rich slopes of the White Mountains at 11000-foot elevation. Patriarch Grove, Ancient Bristlecone Pine Forest. Image ID: 17476 Species: Bristlecone Pine, Pinus longaeva Location: White Mountains, Inyo National Forest, California, USA |
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