April 2023,  EXTRA,  Features

Water wildlife: Great diving beetle

Susanne Masters introduces us to the Great diving beetle (Dytiscus marginalis), remarkable predators inhabiting slow-moving waterways, which carry a bubble of air under their wings to breathe from underwater. 

By day, you can see these beetles in water. At night you are more likely to notice them by hearing humming followed by buzzing as they launch into flight.

To see all the online content from the April 2023 issue of Outdoor Swimmer, visit the 'Underwater' page.