Copepods Swim With Power Strokes to Escape Predators

摘要

To escape from the jaws and claws of predators in cold, viscous water, ma- rine copepods switch from a wave-like swimming stroke to big power strokes, a behavior that has been revealed via 3D high-speed digital holography, according to a study in the Proceedings of the National Academy of Sciences. The technique uses a microscope with a laser and a high-speed digital camera to catch the rapid movements of the microscopic animals in a 3D volume of liquid.