Floating Laser Capable of Long-Distance Propagation

What is the principle? Does the laser generate steam? What? Huh?

Laser bass-o-matic???

190 dB is damn loud.

Although it is close to the typical level for whale calls.

The long distance propagation achieved by whales is miles... 140 meters doesn't seem very impressive for underwater propagation of sound, so I think I must be missing something here.. does the laser really compete with other alternatives.

Well.... here's the loudest animal known, and deadly: the pistol shrimp. Louder than the Navy laser, hotter than blazes weapon to boot.

Thanks artsmith, now I understand how cavitation can do so much damage to pump impellers.

wow!

Kinda scary eh, a critter that can drop its prey by snapping its fingers.

As I've sometimes thought about one creepy critter or another, lucky for us, that one lives underwater!