Harlequin Mantis Shrimp~ The mantis shrimp has one of the most elaborate visual systems ever discovered. It moves so quickly that the water around it boils (this is called supercavitation). They also pack a serious punch that sends out shock waves through the water. These shock waves have been known to shatter aquarium glass. by rinjani
The pistol shrimp is the NOISIEST creature in the ocean. Colonies of them make a distinct snapping noise that overshadows nearly all other sounds throughout the world's oceans, including the calls of some whales. In fact, they are so loud, their snapping sounds interfere with military and scientific sonar (so much so, that hostile submarines have used large colonies of pistol shrimps to hide!).
15 Weird Animals You Didn't Know Exist. #10 SCARED ME.
These special arthropods (stomatopods) have 16 visual pigments! We only have four, and we can see millions of colors. Their vision is hyperspectral, they can see ultraviolet and infrared wavelengths, as well as polarized light. They have a very large focal range and the eyes can emit light, which is used for communication. They have the most complex visual organs on the planet. clairevictoria