Migrating animals ... and is seen in species as varied as monarch butterflies, caribou, and baleen whales. The main source of energy used for migration is fat. Fat stores about 8–10 times ...

In the Yukon, Porcupine caribou travel 3,000 miles ... It is the longest mammal migration on Earth. Great white sharks migrate 12,400 miles between South Africa to Western Australia and back.

Caribou Country Caribou is an important species ... on the migration path of the Porcupine caribou herd. The annual migration of this herd is one of the largest of any land animal on Earth ...

Migrating animals have ... at any time of the day anywhere on Earth makes them extremely useful to the study of animal migration, particularly for marine mammals, as attached transmitters only ...