Biology: from Big to Small is the theme of this years’ Royal Society of Biology amateur photography competition.

The competition invites photographers to explore interactions between the macro and the micro in biology – from tiny fish creating huge shoals, to algal blooms suffocating a river ecosystem, or microorganisms eating plastic waste in our oceans.

Supported by Eppendorf, the competition has two categories each with a cash prize: 18+ (£1000) and under 18s (£500).

Get snapping and submit up to three images by 31 August 2016.

Find out at: