The husband-and-wife filmmaking team of Zach Melnick and Yvonne Drebert join Myles Dannhausen Jr. to discuss their new documentary film, All Too Clear, which explores how quadrillions of tiny invasive mussels, known as quaggas, are re-engineering the ecosystem of the Great Lakes at a scale not seen since the glaciers. To capture this epic change, they spent more than 150 days filming underwater, making it the most ambitious underwater film ever made about the Great Lakes.