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uncommon
Great Diving Beetle
Dytiscus marginalis
- Habitat
- Ponds and slow streams across Eurasia
- Body length
- 35 mm
- Order
- Coleoptera · Dytiscidae
Weird but real
Carries an air bubble trapped under its wing covers. Can stay submerged 36 hours on one breath, hunting tadpoles and small fish.
Why it's cool
A SCUBA tank you grew yourself, attached to a beetle. Larvae are called water tigers for a reason. They paralyze prey with hollow sickle-jaws.
