The plant kingdom's fastest trap sucks in prey in about half a millisecond

Underwater bladderwort plants (Utricularia) grow tiny hollow bladders held under negative pressure and sealed by a trapdoor. When a trigger hair is brushed by passing prey, the door buckles and inverts its curvature, sucking in a slug of water and prey in roughly half a millisecond. High-speed video measured accelerations of up to 600g, among the fastest movements ever recorded in a plant.

— Olivier Vincent, Carmen Weisskopf, Simon Poppinga, Tom Masselter, Thomas Speck, Marc Joyeux, Catherine Quilliet, Philippe Marmottant, Ultrafast underwater suction traps — Proceedings of the Royal Society B, 2011