ker-plunk!

With my left hand I threw the object into the water.  There was kind of a nice little arc as it flew--about five feet up in the air, and then the object plunged into the water with a surprisingly satisfying “ker-plunk” about fifteen feet away.  I was a little surprised at how loud the “ker-plunk” was—kind of a deep and full noise.  There was something that sound that felt very...complete.