Sea slugs use daylight to show off their colours

17 Apr 2025
Nudibranch
A sea slug known from their stinging cells. Image: Cedric van den Berg

Rather than hiding from predators, the brightest and most patterned sea slugs are active during the day so their colours shine, a University of Queensland study has found.

Researchers from UQ’s School of the Environment have completed a comprehensive analysis of sea slug colouration across 45 eastern Australian species.

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