1387-496 - A Florida manatee, Trichechus manatus latirostris, rises to the surface of Crystal River, Florida. This endangered sirenian subspecies migrates to inland rivers during the winter where water temperatures are warmer than the ocean.

1387-474 - A humpback whale, Megaptera novaeangliae, raises its powerful fluke out of the blue waters of the Caribbean Sea and slams it down on the surface to communicate.

1387-472 - A young humpback whale, Megaptera novaeangliae, breaches out of the blue waters of the Caribbean Sea.

1387-473 - A humpback whale, Megaptera novaeangliae, raises its powerful fluke out of the blue waters of the Caribbean Sea and slams it down on the surface to communicate.

1387-453 - A magnificent humpback whale, Megaptera novaeangliae, swims in the clear, blue waters of the Caribbean Sea.

1387-452 - A magnificent humpback whale, Megaptera novaeangliae, swims in the clear, blue waters of the Caribbean Sea.

1387-451 - Mother and calf humpback whales, Megaptera novaeangliae, swim in the clear, blue waters of the Caribbean Sea.

1387-450 - Mother and calf humpback whales, Megaptera novaeangliae, swim in the clear, blue waters of the Caribbean Sea.

1116-53405 - Panorama of blue wildebeest (Connochaetes taurinus) on horizon at sunset in Serengeti National Park, Tanzania

1116-53376 - Herd of plains zebra (Equus burchellii) gallop across river in Serengeti National Park, Tanzania

1116-53356 - Blue wildebeest (Connochaetes taurinus) jump into river from shore in Serengeti National Park, Tanzania

1116-53354 - Scenic view of a large herd of blue wildebeest (Connochaetes taurinus) near shore of river with a group of plains zebra (Equus quagga) in Serengeti National Park, Tanzania

1116-53336 - Slow pan view of a large herd of blue wildebeest (Connochaetes taurinus) rushing across a stream in dust clouds, Serengeti National Park, Tanzania, Africa

1116-53323 - Close-up view of a herd of blue wildebeest (Connochaetes taurinus) crossing the Mara River in large numbers, Serengeti National Park, Tanzania, Africa

1116-53322 - Close-up view of a large herd of blue wildebeest (Connochaetes taurinus) crossing the Mara River in dust clouds, Serengeti National Park, Tanzania, Africa

1116-53320 - Scenic view of a large herd of blue wildebeest (Connochaetes taurinus) near shore of river while a group of plains zebra (Equus quagga) cross the water, Serengeti National Park, Tanzania, Africa

1116-53321 - Scenic view of a large herd of blue wildebeest (Connochaetes taurinus) crossing Mara in two lines, Serengeti National Park, Tanzania, Africa

1116-53083 - Three caribou (Rangifer tarandus) walk by oil storage tanks near Prudhoe Bay and the Point Lonely Short Range Radar Site, where the Central Arctic herd migrates north each summer, Alaska, United States of America

1116-53460 - Sandhill crane (Grus canadensis) migrating north in late April to nesting grounds in Alaska, cries out from a farmer's field in Palmer, Alaska. Located in the Matanuska Valley, Palmer was founded as an agricultural colony in the mid-20th century, Palmer, Alaska, United States of America

1178-44501 - Migrating mallard duck in flight over fields

1178-44499 - Migrating mallard duck in flight over fields

1178-44496 - Migrating mallard duck in flight over fields and hills at sunset

1178-44464 - Flock of migrating mallard ducks flying over fields and trees at sunset

1178-44461 - Flock of migrating mallard ducks flying over fields and trees at sunset

1178-44460 - Flock of migrating mallard ducks flying over hills and field at sunset

1178-44502 - Migrating mallard duck in flight over fields

1178-44500 - Migrating mallard duck in flight over fields

1178-44498 - Migrating mallard duck in flight over fields

759-13305 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13306 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13304 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13303 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13301 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13302 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13300 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13298 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13299 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13297 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13296 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13295 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13291 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13289 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13290 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

759-13288 - Juvenile Crabs migrating through Flying Fish Cove, Gecarcoidea natalis, Christmas Island, Australia

1178-41867 - Rubber duck floating in bubble bath

1178-41173 - Caucasian mother rinsing hair of daughter in bathtub

1178-37483 - Kiln duck with apples

1178-37482 - Kiln duck with apples

809-8324 - Wildebeest migration (Connochaetes taurinus), Masai Mara National Reserve. Kenya, East Africa, Africa

809-8320 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8316 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8317 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8319 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8323 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8321 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8318 - Migratory blue wildebeest (Connochaetes taurinus) crossing the Mara River, Masai Mara National Reserve, Kenya, East Africa, Africa

809-8322 - Wildebeest migration (Connochaetes taurinus), Masai Mara National Reserve. Kenya, East Africa, Africa

1178-37002 - Close up of woman holding duck on farm

1178-36374 - Butcher standing near hanging meat

1178-37001 - Caucasian boy holding duck on farm

1178-35019 - Mari boy feeding ducks on farm

1178-34667 - Caucasian farmer hugging goose in garden

1349-1241 - Cooper's Hawk, Accipiter cooperii

1349-1243 - Red-tailed Hawk

1349-1336 - Red-tailed Hawk

1349-1216 - Red-tailed Hawk and Peregrine Falcon

1349-1242 - Red-shouldered Hawk, Buteo lineatus

1116-49166 - Large herd of Wildebeest (Connochaetes taurinus) kick up dust as they plunge down a steep bank to cross the Mara River, Serengeti National Park, Tanzania

1116-49162 - Herd of Wildebeest (Connochaetes taurinus) crossing the Mara River and climbing out on the far bank in Serengeti National Park, Tanzania

1116-49178 - Wildebeest (Connochaetes taurinus) crowd together as they run along the shore of the Mara River looking for a place to cross, Serengeti National Park, Tanzania

1116-49165 - Large herd of Wildebeest (Connochaetes taurinus) kick up dust as they descend a steep bank to cross the Mara River, Serengeti National Park, Tanzania

1116-49164 - Large herd of Wildebeest (Connochaetes taurinus) kick up dust as they plunge down a steep bank to cross the Mara River, Serengeti National Park, Tanzania

1116-49176 - Wildebeest (Connochaetes taurinus) splash through the Mara River, Serengeti National Park, Tanzania

1116-49177 - Large herd of Wildebeest (Connochaetes taurinus) kick up dust as they plunge down a steep bank to cross the Mara River, Serengeti National Park, Tanzania

1116-49163 - Dense herd of Wildebeest (Connochaetes taurinus) in the dry grasslands of the Serengeti Plains, Serengeti National Park, Tanzania

832-388863 - Flying Cranes (grus grus) in front of morning sky, sunrise, migrating bird, bird migration, Vaestergoetland, Sweden, Europe

832-388850 - Migrating cranes (grus grus) in autumn in front of setting sun, Goldenstedter Moor, bird migration, Oldenburger Muensterland, Lower Saxony, Germany, Europe

832-388862 - Flying Cranes (grus grus) in front of morning sky, sunrise, migrating bird, bird migration, Vaestergoetland, Sweden, Europe

1116-48629 - Line of white-bearded wildebeest (Connochaetes taurinus) cross grassy meadow, Ngorongoro Crater, Tanzania

1116-47512 - Confusion of Blue wildebeest (Connochaetes taurinus) standing under acacia with a herd of Plains zebra (Equus quagga) close by, Serengeti National Park, Tanzania

1116-47573 - American Flamingos (Phoenicopterus ruber) wading in water, Celestun Biosphere Reserve, Celestun, Yucatan, Mexico

1116-47574 - American Flamingos (Phoenicopterus ruber) standing in water, Celestun Biosphere Reserve, Celestun, Yucatan, Mexico

1116-47575 - American Flamingos (Phoenicopterus ruber) flying in a V formation, Celestun Biosphere Reserve, Celestun, Yucatan, Mexico

1116-47526 - Blue wildebeest (Connochaetes taurinus) on the savannah, Serengeti National Park, Tanzania

1116-47885 - Sandhill cranes (Antigone canadensis) in flight over railroad tracks at sunset, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America

741-5757 - Tourist watching wildebeest (Chonnochaetes tautinus), crossing Lake Ndutu, Serengeti, UNESCO World Heritage Site, Tanzania, East Africa, Africa

741-5756 - Migrating wildebeest (Chonnochaetes tautinus) crossing Lake Ndutu, Serengeti, UNESCO World Heritage Site, Tanzania, East Africa, Africa

741-5760 - Migrating plains zebras (Equus quagga) and wildebeests (Connochaetes taurinus), crossing Lake Ndutu, Serengeti, UNESCO World Heritage Site, Tanzania, East Africa, Africa

1116-44235 - Large Group Of Wildebeest (Connochaetes Taurinus) Surge Across The Flooded Mara River In Serengeti National Park, Tanzania

1116-44238 - Large Group Of Wildebeest (Connochaetes Taurinus) Surges Across The Flooded Mara River In Serengeti National Park, Tanzania

1116-44237 - Large Group Of Wildebeest (Connochaetes Taurinus) Surges Across The Flooded Mara River In Serengeti National Park, Tanzania

1116-44239 - Mixed Group Of Zebras (Equus Quagga) And Wildebeest (Connochaetes Taurinus) Crossing The Flooded Mara River In Serengeti National Park, Tanzania

1116-44236 - Migrating Wildebeest (Connochaetes Taurinus) Cross The Flooded Mara River In Serengeti National Park, Tanzania

1116-43132 - Elephant Family On The Move Across The Serengeti Plain, South Africa

1174-6055 - Ducks swimming in urban harbor

1174-6056 - Duck swimming in urban harbor

1116-41829 - Migration of the wildebeest in the maasai mara national reserve, Maasai mara kenya

832-381534 - Cranes (Grus grus) foraging in a corn field in the morning, Tiste Bauernmoor, Burgsittensen, Lower Saxony, Germany, Europe

832-379538 - Common cranes (Grus grus) flying in formation at full moon, Hesse, Germany, Europe

809-7347 - Herd of migrating wildebeest (Connochaetes taurinus) crossing Mara River, Masai Mara Game Reserve, Kenya, East Africa, Africa