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HomeOcean'Nemo-Pi' Underwater Data Logger Measures Waters Around Coral Reefs

‘Nemo-Pi’ Underwater Data Logger Measures Waters Around Coral Reefs

A German non-profit environmental foundation has been developing an underwater data monitor called the “Nemo-Pi” that measures the status of the ocean near coral reefs.

According to the Raspberry Foundation:

“This Raspberry Pi-powered device is made up of a buoy, a solar panel, a GPS device, a Pi, and an array of sensors. Nemo-Pi measures water conditions such as current, visibility, temperature, carbon dioxide and nitrogen oxide concentrations, and pH. It also uploads its readings live to a public webserver.”

'Nemo-Pi' Underwater Data Logger Measures Waters Around Endangered Coral Reefs
‘Nemo-Pi’ Underwater Data Logger Measures Waters Around Endangered Coral Reefs

The Save.Nemo Foundation earlier this summer won the Google Impact Challenge 2018 as the best project from North Rhine-Westphalia.

Foundation CEO Diemo Niemann, after the award in Berlin, said:

“This award is an incentive for us to continue our chosen path with even more passion and energy.”

Save.Nemo’s purpose is to prevent the worldwide destruction of coral reefs by uncontrolled anchoring. To this end, the foundation has developed “Mooring” anchor points where dive and snorkelling boats can be moored on these concrete blocks, sunk in the sea next to the coral reefs, without having to throw any anchors.

Since its founding in 2016, the Save.Nemo team has set up 300 anchor points in Asia, thus already making a sustainable contribution to the protection of coral reefs in the Southeast Asian marine regions.

Niemann says his foundation wants to use the prize to extend its digital mooring network to parts of the ocean off Germany. They also, with the help of other donors, want to plant more moorings in the sea off Indonesia.

For more info, check out the Save.Nemo website at

John Liang
John Liang
John Liang is the News Editor at He first got the diving bug while in High School in Cairo, Egypt, where he earned his PADI Open Water Diver certification in the Red Sea off the Sinai Peninsula. Since then, John has dived in a volcanic lake in Guatemala, among white-tipped sharks off the Pacific Coast of Costa Rica, and other places including a pool in Las Vegas helping to break the world record for the largest underwater press conference.


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