There’s a number that should matter to all of us: 30. As in 30 per cent. It is the proportion of the world’s ocean that science tells us must be effectively protected by the year 2030 (known as 30X30) if we are to preserve marine biodiversity, stabilise the climate, and sustain the livelihoods of the hundreds of millions of people whose food, income, and culture depend on a healthy sea. It’s an ambitious goal. And it’s the entire reason Blue Marine Foundation exists, and why
