Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa

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

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

Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa

Wildebeest (Connochaetes taurinus), Masai Mara, Kenya, East Africa, Africa

Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa

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.

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

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.

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

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

Adult great blue heron (Ardea herodias cognata) at Cerro Dragon on Santa Cruz Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, Sputh America

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.

Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa