The sun rises on a day in May and the animals of the American tropics get ready to beat the heat.
The summer solstice drives macaques into cool water and makes cranes dance on the chilly plateau.
Sea lions, yellow-eyed penguins and dolphins make the most of extra feeding time.
On the first day of spring in Australia, creatures look for either dinner or a date, ranging from kangaroos in the grasslands to koalas in the trees and freshwater crocodiles.