Brittle stars use their arms for movement. They do not have to rely on tube feet like sea stars, but can move quite quickly with their arms. They rapidly wiggle their arms that are highly flexible and helps them propel forward. Brittle stars tend to attach themelves to the seafloor or coral that is lying around to find a place to relax.
http://www.youtube.com/watch?v=4Texm2eTmSc
http://www.youtube.com/watch?v=4Texm2eTmSc