Secchi
The Secchi Disk Foundation
No ratings yetEducationAges 4+
Get it free on the App StoreOpens Apple's App Store
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About this app
Climate change is threatening the phytoplankton that underpins the marine food chain. We must understand why before it's too late. Secchi enables you to take part in the Secchi Disk citizen science study and help collect essential data on the phytoplankton.
What's new
Version 1.6.0 · May 26, 2026
Internal improvements to prepare for iOS 27
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