These areas are really of global significance. It's really important to protect them now, because 20 years from now they may not be there.

In order to do this you really need a historical base line to know what you are working towards.

It's been a slow-motion disaster. It's silent and invisible. People don't imagine this. It hasn't captured our imagination, like the rain forest.

Where you used to put out a fishing line 50 years ago and catch 10 species, now you catch five species for the same amount of effort. That's a recipe for ecological collapse and disaster.

We found five large hotspots that are still remaining today, and two of those are in US waters.