Splatter Zone!

Hippos attract mates by marking territory, urinating and defecating at the same time. Then, an enamored hippo will twirl its tail like a propellor to spread this delicious slop in every direction. This attracts lovers, and a pair will begin foreplay, which consists of playing by splashing around in the water before settling down to business.

Haha. Odd timing, I just watched an hour long hippo documentary two nights ago. Saw alot of this happening whenever the hippos went on land.

I gather it's one of a hippo's major ways of warning interlopers they're trespassing on his turf..

That's in Homosassa Springs, Florida! I went there as a kid. It is so awesome. They have a bunch of manatees too. The sign means what it says by the way.

*splat splat splat* Ewwwwww!!