Original video : https://www.youtube.com/watch?v=ZEP_PJXnnNs <br><br>Happy World Oceans Day! We've teamed up with the SpongeBob SquarePants team to delve a little deeper into the oceans and find out what plankton has done for us.<br /><br />Subscribe to BBC Earth: http://www.youtube.com/subscription_center?add_user=BBCEarth<br />BBC Earth YouTube Channel: http://www.youtube.com/BBCEarth<br /><br />BBC Earth Facebook http://www.facebook.com/bbcearth (ex-UK only)<br />BBC Earth Twitter http://www.twitter.com/bbcearth<br /><br />Visit http://www.bbc.com/earth/world for all the latest animal news and wildlife videos<br /><br />This is a channel from BBC Worldwide who help fund new BBC programmes.
