Rosie Richards, Dominance (SINGLE SHOT 2023)

Taken during the annual giant cuttlefish aggregation in Whyalla, South Australia, this image captures a colourful display of dominance between two rival males, as they vie for a chance to mate - their final endeavour as, for most, their short lives will come to an end after this event.

Images have been resized for web display, which may cause some loss of image quality. Note: Original high-resolution images are used for judging.