Welcome to the OneZoom tree of life explorer...

An interactive map of the evolutionary links between all living things known to science. 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 educational tools for teachers, software for scientists and interactive exhibits for museums. This is a free community resource with no advertising.

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 2,235,076 species and wonder at 105,459 images on a single zoomable page.

  • 2,235,076 species
  • 105,459 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.
Green leaves are either okay for now but might be nearly threatened.
Most leaves are grey meaning that it's not known how threatened they are.

Lady's slipper orchid Aye-aye Golden arrow poison frog Coast redwood Indian pangolin

What they say...

Other endorsements

Become a sponsor...

OneZoom is a registered non-profit in the UK, all our products are available for free. 902 people like you have helped us by making donations. Their names have appeared as sponsors on 1554 leaves of our tree of life 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...

  • 12 September 2023

    The Guardian features One Zoom as one of its 50 weirdest, most wonderful corners of the web .

  • 30 November 2022

    OneZoom features as an interactive part of The Whole of Nature – Forces, Orders, Boundaries exhibition at the Museum of Nature Hamburg, Germany. The exhibition combines science and art to show how nature can be ordered.
  • 29 September 2022

    Donors can now renew their support of sponsored leaves. Sponsorships are only for a four year period, however those who do not renew will remain on our tree of life for the time being. Donors will get an e-mail reminder before their sponsored leaves expire.
  • 23 July 2022

    OneZoom features as an interactive component of the Taxonomy: Our Lives Depend On It exhibition at Bishop Musuem , Honolulu, Hawai‘i.
  • 22 May 2022

    Thank you to On The Edge for funding our latest project: tree tours. We will bring you a collection of guided tours around our tree of life explorer. These tree tours will take you to particularly interesting parts of the tree and give you more information about evolution, biodiversity and conservation as you go. You will be able to sit back and enjoy the tree tour, or hop off and explore freely around any of the tour stops.