|Migrating wildebeest crossing the Mara River, Tanzania, Africa|
|Wildebeest launching themselves into the Mara River to begin their crossing|
|Wildebeest entering the Mara River|
|Wildebeest emerging from the river at the end of the crossing|
Note: A wildebeest is a large dark antelope with a long head, a beard and mane, and a sloping backand also called a gnu.