Starting March 7, 2009, a series of 13 shorts, called "chapters", ranging from 90 seconds to two minutes in length, began airing on The CW4Kids during episodes of TMNT: Back to the Sewer and Chaotic: M'arrillian Invasion. They were streamed on the 4Kids website a week in advance of airing them on television. The episodes comprise a single story called "Mayhem from Mutant Island."http://www.4kidstv.com/tmnt-back-to-the-sewer On March 27, 2010 the 13 shorts were re-aired complied together as a single episode titled "Mayhem from Mutant Island".
