Colony of sea pens - Oceans - BBC

Still in the Tannin-stained waters of the Sunken Valley the team explore in virtual darkness looking for the mysterious sea pens. Time-lapse photography reveals the behaviour of these extraordinary creatures which anchor themselves to the seabed. Amazing clip taken from the BBC's Ocean series. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high q ...