Great diving beetle  (Dytiscus marginalis)

Great diving beetle larva
Great diving beetle larva
© www.osfimages.com
Great diving beetle larva feeding on tadpole
Great diving beetle larva feeding on tadpole
© www.osfimages.com
Male Great diving beetle pupa
Male Great diving beetle pupa
© www.osfimages.com
Female great diving beetle taking air at surface
Female great diving beetle taking air at surface
© www.osfimages.com
Female great diving beetle
Female great diving beetle
© www.osfimages.com
Great diving beetle
Great diving beetle
© www.osfimages.com
Great diving beetle
Great diving beetle
© G. J. Cambridge / www.nhpa.co.uk
Great diving beetle male and female
Great diving beetle male and female
© Stephen Dalton / www.nhpa.co.uk
Great diving beetle feeding on worm
Great diving beetle feeding on worm
© Stephen Dalton / www.nhpa.co.uk
Great diving beetle burying itself in debris prior to hunting
Great diving beetle burying itself in debris prior to hunting
© Jim Hallett / www.osfimages.com