The Ocean Cleanup develops technologies to extract, prevent, and intercept plastic pollution. This requires research into the amount, kind and whereabouts of the pollution. Through the Visual Survey app, anyone on a boat on the ocean can help contribute data. Start a survey, look at the ocean for 30 minutes (well keep an eye on the time for you) and log the debris you see in the app. The Ocean Cleanup will use the data to make important decisions. The data will also be open for other scientists to use.
The Visual Survey app replaces the paper forms that were previously used for this purpose.
Disclaimer: The GPS will be actively running during a survey. Continued use of GPS running in the background can dramatically decrease battery life.