To look after our oceans in the long run, we need a good understanding or how our oceans work, and we need to engage tomorrow's decision makers in caring for our waters and their inhabitants.

This 16 minute video shows how Tom Armentrout, a marine science teacher at Bainbridge High School in Washington State, tackles both of these challenges. His students have built devices that can see and propel themselves underwater. These are called Remotely Operated Vehicles (ROVs). We'll see how they were built and their "sea trials" in the swimming pool.