Welcome to the OneZoom tree of life explorer...

An interactive map of the evolutionary links between all living things. Discover your favourites, see which species are under threat, and be amazed by the diversity of life on earth.

Our tree of life explorer is designed to be easily accessible for everyone; we also provide free educational tools for teachers, software for scientists and interactive exhibits for museums.

What is the tree of life?

The tree of life shows how all life on earth is related. Each leaf represents a different species. The branches show how these many species evolved from common ancestors over billions of years. In our interactive tree of life you can explore the relationships between 2,235,362 species and wonder at 105,279 images on a single zoomable page.

  • 2,235,362 species
  • 105,279 images

Popular places to start exploring...

Biodiversity and Conservation...

We want to help everyone appreciate biodiversity and the need to conserve it.
Red leaves on our tree of life show species known to be under threat of extinction.

Tufted ground squirrel Tiger Kemp’s ridley Northern brown kiwi Coast redwood

What they say...

Other endorsements

Become a sponsor...

OneZoom is a registered non-profit in the UK, all our products are for free. 421 people like you have helped us by making donations. Their names appear as sponsors on 715 leaves of our tree of life.

Only one name per leaf so get your favourite while you can, for yourself or as a gift.

What we've been up to...

  • 26 April 2020

    Version 3.4 of OneZoom is launched with a new landing page and enhanced content across the whole site. We now have more prominent features for learning about biodiversity, taking conservation action, using screenshots and deploying an exhibit at public venues.

  • 28 September 2019

    A new OneZoom museum exhibit is launched as part of Darwin and Dinosaurs at the Museum of Idaho. This coincides with the launch of OneZoom version 3.3.1 which features many enhancements to the musuem display code. Image used with kind permission from Darwin and Dinosaurs
  • 16 April 2019

    OneZoom is featured in an interview for the Complexity Explorer of the Santa Fe Institute. The Complexity Explorer hosts a range of massive open online courses about science, including a new course on the origins of life.

  • 21 March 2019

    We're delighted to work as a partner to the One Tree, One Planet project providing their tree of life visualisations. We now release a One Tree, One Planet view as part of a new version of OneZoom. Version 3.3 includes all the features of version 3.2 and adds a new Polytomy view as well as performance enhancements, changes to the way images are processed to enable compatability with the latest version of the Encyclopedia of Life, and specific developments to support the One Tree, One Planet tree view.

  • 28 February 2019

    Pavel Linhart has released a version of OneZoom incorporating the sounds of 41 Tetrapods. It is built from OneZoom V1.2 kiosk available from our developer page.