Search results for Research Tag

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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, Megaptera novaeangliae, Maui
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, Megaptera novaeangliae, Maui
Half Dome and storm clouds at sunset, viewed from Sentinel Bridge, Yosemite National Park, California
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, Cervus canadensis, Mammoth Hot Springs, Yellowstone National Park, Wyoming
Vernal Falls at peak flow in late spring, with a rainbow appearing in the spray of the falls, viewed from the Mist Trail, Yosemite National Park, California
Bull elk spar to establish harems of females, Gibbon Meadow, Cervus canadensis, Gibbon Meadows, Yellowstone National Park, Wyoming
A rainbow appears in the mist of the Lower Falls of the Yellowstone River. At 308 feet, the Lower Falls of the Yellowstone River is the tallest fall in the park. This view is from Lookout Point on the North side of the Grand Canyon of the Yellowstone. When conditions are perfect in midsummer, a midmorning rainbow briefly appears in the falls, Yellowstone National Park, Wyoming
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, Yellowstone National Park, Wyoming
Old Faithful geyser, sunrise. Reaching up to 185' in height and lasting up to 5 minutes, Old Faithful geyser is the most famous geyser in the world and the first geyser in Yellowstone to be named, Upper Geyser Basin, Yellowstone National Park, Wyoming
Mule deer in tall grass, fall, autumn, Odocoileus hemionus, Yellowstone National Park, Wyoming
A whale shark swims through the open ocean in the Galapagos Islands. The whale shark is the largest shark on Earth, but is harmless eating plankton and small fish, Rhincodon typus, Darwin Island
Horsetail Falls backlit by the setting sun as it cascades down the face of El Capitan, February, Yosemite Valley, Yosemite National Park, California
Yosemite Falls at peak flow in late spring, viewed from Cooks Meadow, Yosemite National Park, California
Galapagos shark swims over a reef in the Galapagos Islands, with schooling fish in the distance, Carcharhinus galapagensis, Wolf Island
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, Sphyrna lewini, Wolf Island
A great white shark swims through the clear waters of Isla Guadalupe, far offshore of the Pacific Coast of Mexico's Baja California. Guadalupe Island is host to a concentration of large great white sharks, which visit the island to feed on pinnipeds and use it as a staging area before journeying farther into the Pacific ocean, Carcharodon carcharias, Guadalupe Island (Isla Guadalupe)
Galapagos sea lion pup, Punta Espinosa, Zalophus californianus wollebacki, Zalophus californianus wollebaeki, Fernandina Island
Humpback whale breaching with pectoral fins lifting spray from the ocean surface, Megaptera novaeangliae, Maui
Lembert Dome and late afternoon clouds rise above Tuolumne Meadows in the High Sierra, catching the fading light of sunset, Yosemite National Park, California
Scripps Pier solstice, sunset aligned perfectly with the pier, Scripps Institution of Oceanography, La Jolla, California
Yosemite Falls and star trails, at night, viewed from Cook's Meadow, illuminated by the light of the full moon, Yosemite National Park, California
Bigeye trevally jacks, motion blur, schooling, Caranx sexfasciatus, Darwin Island
South American sea lion underwater, Otaria flavescens, Patagonia, Argentina, Otaria flavescens, Puerto Madryn, Chubut
Mother and calf southern right whales underwater, swimming over sandy shallow bottom, Eubalaena australis, Puerto Piramides, Chubut, Argentina
Townsley Lake (10396'), a beautiful alpine lake sitting below blue sky, clouds and Fletcher Peak (right), lies amid the Cathedral Range of glacier-sculpted granite peaks in Yosemite's high country, near Vogelsang High Sierra Camp, Yosemite National Park, California
Portrait of a Southern Right Whale Underwater, Eubalaena australis. This particular right whale exhibits a beautiful mottled pattern on its sides, Eubalaena australis, Puerto Piramides, Chubut, Argentina
White southern right whale calf underwater, Eubalaena australis. About five per cent of southern right whales are born white due to a condition known as grey morphism and will gradually turn dark as they age. They are not albino (which is a complete lack of pigmentation). Sometimes referred to as "brindled", the white coloration is a recessive genetic trait and only lasts a few months. Typically, but not always, white calves will become much darker as they mature but will still be somewhat lighter than normal even as adults, Eubalaena australis, Puerto Piramides, Chubut, Argentina
Mother and calf southern right whales underwater. The calf swims close to its mother but, if the mother is accepting, the calf will be allowed to come close to the photographer and check him out, Eubalaena australis, Puerto Piramides, Chubut, Argentina
Yosemite Falls and rainbow, Half Dome in distance, viewed from the Yosemite Falls trail, spring, Yosemite National Park, California
Mother and calf southern right whales underwater. The calf swims close to its mother but, if the mother is accepting, the calf will be allowed to come close to the photographer and check him out, Eubalaena australis, Puerto Piramides, Chubut, Argentina
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