Strange and unusual life inhabits the plankton rich seas of the underwater kelp forests. Watch this short video from BBC natural history series The Blue Planet to see the mating habits of amazing colour changing squid and the weird movements of the aptly named hand fish Taken From Blue Planet Series 1 Subscribe to the BBC Earth YouTube channel: www.youtube.com/subscription_center?add_user=BBCEarth BBC Earth YouTube Channel: www.youtube.com/BBCEarth BBC Earth Facebook www.facebook.com/bbcearth BBC Earth Twitter www.twitter.com/bbcearth BBC Earth Instagram www.instagram.com/bbcearth/?hl=en Visit www.bbc.com/earth/world for all the latest animal news and wildlife videos This is a channel from BBC Worldwide who help fund new BBC programmes.