The impossible claim

This beetle mixes two chemicals inside its body, boils them to ~100°C, and fires the result at its attacker — in rapid pulses.

The verified facts

Bombardier beetles (Brachinus and relatives) keep hydroquinone and hydrogen peroxide in separate reservoirs. When threatened, both are delivered into a reaction chamber with catalases and peroxidases — the exothermic reaction heats the mixture to around 100°C and the beetle sprays it in a rhythmic pulsed jet (up to ~500 pulses per second) with remarkable aim, even around bends.

  • The explosion chamber’s inlet valve acts as a one-way flash arrestor — the beetle never blows itself up
  • The spray deters frogs, birds, and other predators; a grabbed beetle can fire at the attacker’s mouth from inside it
  • The pulse mechanism inspired research into fuel-injection systems

Watch

🎬 See the Short on YouTube — “This Beetle Boils Its Own Chemicals. Then It Fires Them.”

Sources

  • Dean, J., Aneshansley, D. J., Edgerton, H. E. & Eisner, T. (1990). Defensive spray of the bombardier beetle. Science.
  • Eisner, T. et al. (2000). Spray aiming in bombardier beetles. PNAS.
  • Arndt, E. M. et al. (2015). Mechanistic origins of bombardier beetle spray pulsation. Science.

Part of Impossible Creatures — every fact verified, every creature real. Watch the Shorts at youtube.com/@taginbertcom.