Media playback is unsupported on your device

Ocean medicine hunt: Exploiting the science of the sea?

Scientists are scouring the ocean floor looking for species that could unlock a new generation of life-saving drugs.

It is believed that unusual compounds and gene sequences in some marine creatures and plants could lead to anything from much-needed new antibiotics to cancer drugs.

Rebecca Morelle reports.

Go to next video: Man on a mission to save oceans