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.
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Outdoor Swimmer is the magazine for outdoor swimmers by outdoor swimmers. We write about fabulous wild swimming locations, amazing swim challenges, swim training advice and swimming gear reviews.