Ask any evolutionist, and he will tell you that the Venus Flower Basket is one of the least-evolved animals. This animal is actually a sponge that is made up of a colony of creatures, and it does some amazing things.

Ref: Discover, 8/05, pp. 42-47, George M. Whitesides, "Illuminated Life." Photo: Euplectella Aspergillum Vnus flower sponge (PD) NOAA