North Pacific humpback whales, a mother and calf pair swim closely together just under the surface of the ocean. The calf will remain with its mother for about a year, migrating from Hawaii to Alaska to feed on herring.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 00140
Humpback whale breaching, near Molokai, Hawaii. Megaptera novaeangliae. It is suspected the breaching often has a communicative purpose which depends on the behavioral context of the moment.
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii
Image ID: 00205
Brown pelican in flight against pastel-colored sky at sunrise. The wingspan of the brown pelican is over 7 feet wide. The California race of the brown pelican holds endangered species status. In winter months, breeding adults assume a dramatic plumage.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 15122
Male elk bugling during the fall rut. Large male elk are known as bulls. Male elk have large antlers which are shed each year. Male elk engage in competitive mating behaviors during the rut, including posturing, antler wrestling and bugling, a loud series of screams which is intended to establish dominance over other males and attract females.
Species: Elk, Cervus canadensis
Location: Mammoth Hot Springs, Yellowstone National Park, Wyoming
Image ID: 19693
A large, old brown bear (grizzly bear) wades across Brooks River. Coastal and near-coastal brown bears in Alaska can live to 25 years of age, weigh up to 1400 lbs and stand over 9 feet tall.
Species: Brown bear, Ursus arctos
Location: Brooks River, Katmai National Park, Alaska
Image ID: 17039
Extended High Mountain pose, Utthita Tadasana, sunrise on Mesa Arch, Utah. An exuberant hiker greets the dawning sun from atop Mesa Arch.
Location: Island in the Sky, Canyonlands National Park, Utah
Image ID: 18036
A great white shark opens it mouth just before it attacks its prey with a crippling, powerful bite. After the prey has been disabled, the shark will often wait for it to weaken from blood loss before resuming the attack. If the shark looses a tooth in the course of the bite, a replacement just behind it will move forward to take its place.
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
Image ID: 19452
Portrait of a young brown bear, pausing while grazing in tall sedge grass. Brown bears can consume 30 lbs of sedge grass daily, waiting weeks until spawning salmon fill the rivers.
Species: Brown bear, Ursus arctos
Location: Lake Clark National Park, Alaska
Image ID: 19135
Tiny hikers atop Sand Dunes in Death Valley National Park, California. Near Stovepipe Wells lies a region of sand dunes, some of them hundreds of feet tall.
Location: Stovepipe Wells, Death Valley National Park, California
Image ID: 15577
Hiker in North Window, sunset, western face. North Window is a natural sandstone arch 90 feet wide and 48 feet high.
Location: North Window, Arches National Park, Utah
Image ID: 18159
Scalloped hammerhead shark swims over a reef in the Galapagos Islands. The hammerheads eyes and other sensor organs are placed far apart on its wide head to give the shark greater ability to sense the location of prey.
Species: Scalloped hammerhead shark, Sphyrna lewini
Location: Wolf Island, Galapagos Islands, Ecuador
Image ID: 16246