Creeping crinoids!

The sea lily – normally seen rooted to the spot by its stem – can crawl away from predators at a rate of up to 3 to 4 centimetres per second, dragging its broken stem behind it.

“In a race with a sea urchin, the sea lily would probably win.”

View the ocean floor dash! (Requires Quicktime, 600kb)

A more in-depth article can be read here.