A hydroblade is a figure skating edge move or connecting step in which a skater glides on a deep edge with the body stretched in a very low position, almost touching the ice. Several variations in position are possible, but one commonly performed by singles skaters is on a back inside edge with the knee of the skating leg deeply bent, the free leg crossed behind and extended outside the circle, and the upper body leaning into the circle with two, one, or no hands skimming the ice.
Although they did not invent the element, it was popularized in the early 1990s by the Canadian ice dance team of Shae-Lynn Bourne and Victor Kraatz; their coach Uschi Keszler was responsible for coining the name "hydroblade."