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Crewsaver 2021 Safetyline LEADERBOARD

The map of Secchi depth data shows that sailors are taking part in the study all around the world

© Secchi Disk Study
The map of Secchi depth data shows that sailors are taking part in the study all around the world photo copyright Secchi Disk Study taken at
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Selden 2020 - FOOTERCrewsaver 2021 Safetyline FOOTERStoneways Marine 2021 - FOOTER