OneZoom Tree of Life Explorer

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 732,697 species and wonder at 68 images on a single zoomable page.

732,697 species
68 images

Find out more

Popular places to start exploring...

Start at the origin of life

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.

For Everyone

For Education

For Science

What they say...

OneZoom is a brilliant, interactive tool for understanding the scope and scale of the tree of life, including highlights for conservation priorities.
Prof. Dame Georgina Mace, University College London
This project has enormous potential both as a tool for increasing public knowledge and engagement but also as an aid to research in Conservation and Biodiversity.
Prof. Sir John Beddington, Chief scientific Adviser to the UK, 2008-2013
OneZoom really helps get my mind around the complexities of the tree of life.
Tim Boyce
In my opinion, it is the best visualisation of evolution that's out there for the lay person.
Michael Hanson, Vice Principal, Scotts Valley High School, California
I love the OneZoom tool - really easy to use and the visualization is great. I've just shared it with my 13 year old, who is a science geek - he loved it and is still playing with it!
Graham Higley, Encyclopedia of Life Executive Chair
OneZoom is probably my favorite website of all time.
Jackson Wheat, biology student at LSU Baton Rouge
…simply the most useful tool for understanding phylogenetic and evolutionary relationships.
Milana, biology undergraduate at Imperial College
The best interactive tree of life ever!
Prof. Jerry Coyne, University of Chicago, author of Why Evolution is True
I often use OneZoom in my class, the students love it.
Dr. Jana Vamosi, Associate Professor, University of Calgary
OneZoom is one of the most fascinating visualization projects
Sarah Dione, Visual Designer, USA (2017)

Other endorsements

Become a sponsor...

OneZoom is a registered non-profit in the UK, all our products are available for free.

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

Sponsor a leaf now!

What we've been up to...

1 January 2020
This is a mock-up website running from a Docker image, so no news items have been listed. Please visit the main OneZoom website to see what we've been up to recently.
More...