Here we describe and test the addition of a clear liquid optical chamber (CLOC) to a BRUV system to improve underwater visibility when observing motile fauna in turbid waters. The CLOC method was trialled with respect to the ability of the system to identify taxa to species level in both controlled laboratory and field conditions across gradients of underwater visibility.

Supplement to: Jones, Robyn E; Griffin, Ross A; Rees, Sam C; Unsworth, Richard (2019): Improving visual biodiversity assessments of motile fauna in turbid aquatic environments. Limnology and Oceanography-Methods, 17, 544-554