What is claymation?,

its where someone makes a small figure with molding clay, and they make a stop motion animation. an example of a clay-mation movie would be a Nightmare Before Christmas, or Wallace and Grommet.

An animation made with clay as opposed to traditional animating.

Explanation:

It's usually stop motion and hand sculpted. This means each piece, either characters or backgrounds, can be changed frame by frame.

It's a pretty cool style