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![Secchi disc readings were used to determine turbidity at the reef site on a regular basis reef0145.jpg Secchi disc readings were used to determine turbidity at the reef site on a regular basis](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_reef0145.jpg?itok=jizTtZXh)
Description
Secchi disc readings were used to determine turbidity at the reef site on a regular basis. The rope was marked at five foot intervals to determine at what distance the disc could no longer be seen on a horizontal axis. (Image credit: Dr. James P. McVey)
Photographer
Dr. James P. McVey
Display Date
Jun-69
Location
Pokai Bay, Oahu
Collection
Coral Kingdom
Pacific Reefs
Diving Biologists
NOAA Affiliation
NOAA Sea Grant Program
Keywords
Coral Reefs
Marine Biologist
Artificial Reef
Diving