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
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.
What they say...
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Magnificent piece of software, brilliantly intuitive visualisation of the tree of life
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The best tool I’ve seen for exploring the tree of life on this planet.
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OneZoom is one of the most fascinating visualization projects
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One of the coolest things I've seen on the internet
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In my opinion, it is the best visualisation of evolution that's out there for the lay person.
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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!
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The best interactive tree of life ever!
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Your tree is the best thing to ever happen to evolutionary education. Keep up the amazing work.
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I have been telling people about how incredible OneZoom is all week!
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I wanted to congratulate the OneZoom team on the amazing interface and reference resource that is OneZoom. Amazing job!
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.
What we've been up to...
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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.

