Join the NASA team by helping us classify coral reefs! Travel the world, make friends with ocean wildlife, and classify real coral by painting in 3D. The classifications you create go directly to NASA and help protect the oceans!

3D PAINTING - Relax and paint over beautiful 3D images to express yourself and help the environment
UNDERWATER WORLDS - Explore the open ocean meeting clownfish, sea turtles, whale shark and more
LEARN AS YOU GO - Learn about the oceans and how to classify coral as you go, no prior knowledge needed
PLAY ON MAC OR iOS - Save your data between devices and play on the go

What’s New

Version 2.4

Point Cloud Support

Ratings and Reviews

4.3 out of 5
15 Ratings

15 Ratings


Great app to learn & make a difference

Awesome app! It’s very straightforward to use for anybody, and you get to learn about marine coral and more by using; and simultaneously helping NASA to better map and evaluate the health of our Coral reefs. You get to paint color coding overlays onto detailed 3D coral plots of real coral, which is satisfying to do by itself, but also feels really good because the 3D data you are analyzing is real mapped coral and your submissions get sent to a real super computer which helps compile data and improve its AI through public inputs. All in all: a great resource to have fun and learn while literally helping improve data to help save the planet!

-Thanks to the team at NASA working on saving our reefs, and the people who made this app!
(I end up using this app for periods of 30 minutes or more because it’s so satisfying and borderline addictive to submit your work because you know it has a real impact. For most people, it’s seemly small actions that will contribute large scale globally: in the case of saving our reefs, which are being harmed by human impacts, everything little change or effort you make, contributes to a larger effort. SO PLAY YOUR PART AND MAKE A DIFFERENCE by just downloading this app!

DJ Kenneth A ,

Great concept

This is a great idea for a “game”. Help researchers identify coral, learn among the way, level up etc. the 3D models are very nice and the music is very fitting. There are some technical issues it seems though. Downloading data and loading data is not consistent and sometimes just straight up doesn’t happen. (It makes doing things like reviewing very difficult to accomplish). If those small things can get ironed out this would be an amazing seamless experience

Marts6509 ,

Game with purpose

I love everything about this application. It’s a game where you can learn, enjoy and help save the planet even if it’s in a small proportion. The application does a great job at making you feeling significant in the journey to environmental appreciation and salvation. As a biologist, I am learning even more about coral reefs and hopefully with the data sent we can make even bigger discoveries! I even feel honored to be a part of such an important study.

App Privacy

The developer, NASA, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • User Content
  • Identifiers
  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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