Science View S2014E04 - Sea Forest or Sea Desert?

Sea forests, bountiful beds of sea kelp that are home to all kinds of fish. In recent years, more and more of these rich ecosystems are withering away into life-less sea deserts. The cause? A single organism. These ferociously hungry creatures can multiply into groups numbering in the hundreds of millions. What can stop them? Join us as we uncover the mysteries of the vanishing forests of the sea.