ANIMAL BEHAVIOUR - Runner-up
These soldier crabs were poised near the entrance to a burrow. It looked as though they were comparing body size, and the clear disparity between them meant that the conflict was resolved without a fight. Similarly sized rivals tend to fight to determine who is going to occupy a burrow.
Stockton Bridge, Stockton, New South Wales
Canon EOS 1D Mk IV, Canon 800mm f/5.6 L IS, 1/800, f/14, ISO 800, lens supported on a flat rockby Ofer Levy, New South Wales