More than four billion people live within a stone's throw of the ocean, so what happens to it affects them immediately, daily, whether pollution, more frequent storms, or rising sea levels.

I think the best way to protect the ocean is to encourage people onto it and into it.

The more familiar people are with the ecosystem that lives below the surface - invisible until you're actually in the ocean - the more likely they are to do what they can to protect it.

More than four billion people live within a stone's throw of the ocean, so what happens to it affects them immediately, daily, whether pollution, more frequent storms, or rising sea levels.