Google Doodle celebrates Earth Day 2016 with five stunning illustrations

Earth Day, observed annually on April 22, on which people throughout the globe demonstrate their support for environmental protection. Google has honoured the vastness of Earth's diversity with a doodle.

Forest and Red Fox

Earth Day was first celebrated in 1970 and is "the one day that transcends culture, language, and tradition," Google said, explaining the significance of the Google doodle that inspires us to celebrates our planet.

Tundra and Polar Bear

Today's doodle has been designed by artist Sophie Diao and highlights Earth's five major biomes: the tundra, forest, grasslands, desert, and coral reefs in five stunning illustrations. In each illustration, you'll find one animal who's been singled out for their 15 minutes of fame.

Desert and Tortoise

In Friday's doodle, the ubiquitous Google logo morphs to depict, in turn, a polar bear in the tundra, a red fox in the forest, an elephant in the grasslands, a tortoise in the desert and an octopus in the ocean - with a different one appearing each time one visits the site's homepage, TIME online reported.

This day commemorates our planet's ever-flourishing ecosystem that needs to be fiercely protected because it's the only one we've got.

Aquatic/Ocean, Coral Reef and Octopus

Happy Earth Day!