Lobster stocks around Iceland’s coast are so low a fishing ban is not out of the question.

Scientists with the Department of Fisheries and Oceans say late spawning for capelin had a significant impact on numbers.

Fish provide a vital source of protein for over half the world's population, with over 56 million people employed by or subsisting on fisheries. But climate change is beginning to disrupt the complex, interconnected systems that underpin this major source of food.

Populations of marine wildlife have plummeted by a half on average over the past 40 years with some species suffering far greater declines as a result of habitat loss, overfishing, rising sea temperatures and worsening ocean acidity, a major report has found.