Whirligig Beetle (1/3)

Coleoptera: Gyrinidae

Gyrinidae sp  

"Whirligigs spend most of their time on the surface swimming in groups, tracing quick circular patterns while looking for dead or injured insects to feed on. When threatened, they usually dive, but they can also fly and some will come to lights."*

*Zborowski, Paul and Storey, Ross (2010). A Field Guide to Insects in Australia 3rd Ed..
Reed New Holland, p.148.