The Secchi Disk study is the largest, global marine citizen science study conducted by seafarers www.secchidisk.org The donation from Whirlwind will enable a complete renewal of the iOS Secchi application to help seafarers submit the data they have collected to the Secchi Disk study’s database. The aim of the Secchi Disk study, which is now in its 7th year, is to engage seafarers to help compile a time series of the oceans’ phytoplankton so that we can better understand this important marine life. The study is open to all ages and provides a great educational opportunity while at sea, in addition to the collection of valuable and unique, scientific data.