Dredging: how the hell does that work?

Ben Mendelsohn sez, "Dredging - the mechanized transport of underwater sediments - is one of the most elemental of the infrastructural support systems that underlie modern societies. Through dredging, we act as geologic agents - moving earth in what amounts to a new geologic cycle. This video introduces dredging, its landscapes, and some of the fascinating technologies that we use to manage it. It was produced in support of DredgeFest NYC, a symposium on the human acceleration of sediments, to be held in New York City on September 28-29." (Thanks, Ben!)