This video is called Flying Crinoid.
From the Google cache of Dear Kitty ModBlog.
Underwater Escape: A Sea Lily’s Surprising Scoot
By LiveScience Staff
posted: 17 October 2005
Sea lilies look like terrestrial flowers, but they are really animals.
Yet until now scientists had no idea how agile they were.
A new video reveals a sea lily scooting across the ocean floor, apparently to escape a predator.
University of Michigan professor of geological sciences Tomasz Baumiller unveiled the video Sunday at a meeting of the Geological Society of America.
The two main types of crinoids look a lot alike except that sea lilies have stalks, and feather stars do not.
In addition, feather stars are known to crawl, and some can even swim, but sea lilies were thought not to have such abilities.
Some sea lilies regularly shed and regenerate the ends of their stalks, leaving finger-like appendages.
Baumiller and his colleague, Charles Messing of Nova Southeastern University, speculated that the creatures might be pulling up anchor to move to another location and the using their “fingers” to reattach.
In the late 1980s the researchers observed that sea lilies could, in fact, move from place to place—Baumiller had put some in a flow tank and noticed that they changed position from day to day, and Messing had noticed the same thing during dives with a submersible off Jamaica and Grand Cayman Island.
Both researchers saw sea lilies using their feathery arms to crawl, dragging their stalks behind them, but the scientists wondered what induced sea lilies to relocate in nature.
The video, of sea lily species Endoxocrinus parrae, can be seen here.
Crown of thorn starfish: here.
Silurian fossil starfish: here.
This is a sea cucumber video.