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:AXA Ocean Education
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Science | Ages 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 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.
Science | Ages Ages 14-16
This Coral Oceans GCSE Science unit of work challenges students to think about the impact they have on coral reefs as they study their importance, the consequences of threats and how to protect them. The cumulative approach to this unit means students will develop skills throughout to complete a decision-making exercise in the last lesson.