Google is marking Earth Day by highlighting a few of the more extreme living things we share the planet with.
Google's Monday Doodle features an animated slideshow exploring six different endangered organisms from different Earth elevations, some of which have only recently been discovered by humans. The Doodle also includes fun facts about the organisms and offers the curious the chance to learn more about them in search.
Earth Day, which is observed on Monday this year, was founded in 1970 in response to an oil spill that occurred a year earlier off California's coast, spewing more than 3 million gallons of oil and killing more than 10,000 seabirds, dolphins, seals and sea lions.
The annual one-day celebration aims to raise awareness of environmental issues, with events around the globe promoting recycling, pollution reduction and care for the planet.