Never heard of a Secchi Disk? Well, this is what one looks like. A Secchi disk is an impressively low-tech piece of scientific equipment invented in 1865 by Italian astronomer Angelo Secchi to measure ...

In celebration of Lakes Appreciation Month, the annual Secchi Dip-In will be held from 10 a.m. to noon July 31 at Loch Lomond Reservoir. The public is invited to this outdoor, family-friendly event to ...

Richard Kirby is a Marine Institute Research Fellow at Plymouth University and the Secchi Disk study's project leader. Phytoplankton are the microscopic plant-like cells that float in the sea’s sunlit ...