Oceans and seas cover 75% of the world's surface and contain 97% of it's water. They regulate our climate, and marine plants produce half of the Earth's oxygen.

Coral reef systems, marine environments that harbour a vast number of fish species, serve as critical nurseries for much of the biodiversity of the entire ocean - and they have never been more threatened that they are today.

Recently discovered, hydrothermal vents are fractures in the sea floor that spew sulphur compounds, supporting the only complex ecosystem known to run on chemicals, rather that energy from the sun. Gigantic tube-worms and mussels thrive in densities of up to 65 pounds per square foot around these vents.