Sir David Attenborough unveils the two stunning underwater realms of Saudi Arabia - the flamboyant Red Sea and the contrasting hot muddy Gulf, capturing for the first time the rare event of Palolo worms spawning at night.
David Attenborough
Score: 8.0
Score: 5.3
Score: 0.0
Score: 6.7
Score: 4.2
Score: 6.6
Score: 7.5
Score: 6.6
