Cavitation
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Cavitation in fluid mechanics and engineering normally is the phenomenon in which the static pressure of a liquid reduces to below the liquid's vapor pressure, leading to the formation of small vapor-
Cavitating propeller model in a water tunnel experiment
Cavitation damage on a valve plate for an axial piston hydraulic pump
Cavitation damage evident on the propeller of a personal watercraft
Cavitation damage to a Francis turbine
Mantis shrimp
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Mantis shrimp are carnivorous marine crustaceans of the order Stomatopoda. Stomatopods branched off from other members of the class Malacostraca around 400 million years ago, with more than 520 extant
Cavitation
…cavitation is the process in which a void or bubble in a liquid rapidly collapses, producing a shock wave. It occurs in nature in the strikes of mantis shrimp and pistol shrimp, as well as in the vascular tissues of plants. In manufactured objects, it can occur in control valves, pumps, propellers and impellers…
Odontodactylus Scyllarus 2
Lysiosquillina maculata Prague 2012 1
Drawing of a mantis shrimp by Richard Lydekker. The folded raptorial claws are flanking the carapace.
Close-up of a peacock mantis shrimp showing the structure of the eyes. The three dark spots are pseudopupils, indicating the ommatidia that are pointing towards the camera's POV