The Secchi disk was created in 1865 by an Italian priest and scientist, Pietro Angelo Secchi, to measure water turbidity (water cloudiness) in oceans, lakes and ponds. Traditionally, plain white Secchi disks are used for ocean work, and black and white for inland waters.
Part of:XL Catlin Oceans Education
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Science | Ages 7 - 11
These resources for ages 7-11 are based on the journeys undertaken by science teams taking part in the XL Catlin Seaview Survey expeditions. These resources present a complete scheme of work for the science classroom, covering core science and sustainability curriculum areas as well as enhancing students' creative and communications skills.
Science | Ages 11 - 14
These resources for ages 11-14 are based on the journeys undertaken by science teams taking part in the XL Catlin Seaview Survey expeditions. Starting with the Great Barrier Reef in 2012, these expeditions seek to create a baseline survey of the world's reefs as well as more in-depth research on the deep reef lying between 30m and 100m.