About Secchi
Secchi is the mobile interface to the Secchi Disk project enabling any seafarer to take part in a global study of the phytoplankton in our oceans. By using this app you will help us learn more about the phytoplankton at a...
Secchi is the mobile interface to the Secchi Disk project enabling any seafarer to take part in a global study of the phytoplankton in our oceans. By using this app you will help us learn more about the phytoplankton at a time when their habit is altering due to climate change.
The phytoplankton in the sea, although they are invisible to the naked eye, are the ocean’s most important inhabitants since they begin the plankton food web that underpins the marine food chain. Today, there is evidence that the phytoplankton are being affected by climate change with ensuing ramifications for the life in the sea and the ecology of our planet.
Scientists need to know more about how the phytoplankton are changing both seasonally and from year to year, and this is where seafarers and the Secchi App can help out.
Along with the Secchi App, all you need do to take part is make a very simple piece of scientific equipment called a Secchi Disk and use it to record the Secchi Depth when you are at sea.
Full instructions on how to make and use a Secchi Disk and measure the Secchi Depth are included in the Secchi App and they can also be found at the website www.SecchiDisk.org.
Previous Versions
Here you can find the changelog of Secchi since it was posted on our website on 2014-06-13 21:13:48.
The latest version is and it was updated on 2026-06-11 13:24:31. See below the changes in each version.
Secchi version
Updated At: 2026-05-10
Secchi version 2.1.2
Updated At: 2024-12-10
Changes: Performance improvements and bug fixes
Secchi version 2.0.9
Updated At: 2022-05-24
Changes: Code update and the ability to link to the Secchi Disk global database added.
Secchi version 2.0.2 (416)
Updated At: 2018-02-01
Changes: User Interface:
Introducing a new user interface with a smoother navigation, look and feel.
Push Notifications:
Receive important notifications and updates from the Secchi Disk study.
GPS:
Now you can gather your GPS data while the app is in the background.
Upload:
You can now schedule data to upload automatically when back on land.
Secchi version 1.09
Updated At: 2015-12-07
Changes: Version 1.09,Minor changes to reflect organisational changes within the team.
Secchi version 1.04
Updated At: 2013-02-27
Changes: Several fixes and updates
Disclaimer
Official Google Play Link
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