Cavitation Bubbles facts

While investigating facts about Cavitation Bubbles, I found out little known, but curios details like:

A process called cavitation in which the propeller of a boat creates small, cylindrical 'holes' in the water where the pressure is so low that the water can boil at room temperature, creating bubbles of low pressure and temperature vapor bubbles.

Military submarines have used colonies of snapping shrimp to hide from enemy subs. The shrimp snap shut their claws to form "cavitation bubbles" that implode underwater; the bursting bubbles make enough noise to drown out submarine sonar.

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 9 of the best facts about Cavitation Bubbles I managed to collect.

1. The Pistol Shrimp, which is only 2 inches across, can generate a sound louder than a Saturn V rocket taking off by creating a "cavitation bubble" via snapping its pincers shut extremely quickly. The bubble is also momentarily almost as hot as the surface of the sun.

2. "shrimpoluminescense": the pistol shrimp quickly snaps a specialized claw, creating a cavitation bubble moving at 60 miles per hour, releasing a sound reaching 218 decibels and acoustic pressures of up to 80 kPa, strong enough to kill small fish, and even create a tiny flash of light

3. About the Pistol Shrimp. Its claws can open and close so fast that it produces a water bubble(cavitation bubble)that vaporizes on implosion, reaching temperatures hotter than the sun.The implosion of the bubble is followed by a large sound.The shrimp uses this to stun or sometimes kill the prey.

4. Although the cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems, medical research has not demonstrated such a connection. The cracking sound is caused by carbon dioxide cavitation bubbles suddenly partially collapsing inside the joints.

5. A mantis shrimp can push so fast that it creates little vacuum (liquid-free) zones called cavitation bubbles. These bubbles collapse then create a shockwave and even generate light and heat.

6. The mantis shrimp, who's punch has an equivalent acceleration speed of a .22 caliber bullet being shot and also creates a cavitation bubble wherein light and heat are made. Theoretically the punch is so fast it could happen 500 times in the blink of an eye.