http://en.wikipedia.org/wiki/Mantis_shrimp

Mantis shrimp possess hyperspectral colour vision, allowing up to 12 colour channels extending in the ultraviolet[10]. Their eyes (both mounted on mobile stalks and constantly moving about independently of each other) are similarly variably coloured, and are considered to be the most complex eyes in the animal kingdom.[11][12] They permit both serial and parallel analysis of visual stimuli.

拉尿虾还能用自己带的锤子把螃蟹壳砸烂：
In smashers, these two weapons are employed with blinding quickness, with an acceleration of 10,400 g and speeds of 23 m/s from a standing start [8], about the acceleration of a .22 caliber bullet. Because they strike so rapidly, they generate cavitation bubbles between the appendage and the striking surface

http://www.youtube.com/watch?v=Hkv_30niM_A