Despite the Danish territory's remote North Atlantic location, Mr Gregarsen says the deep, nutrient-rich, waters are well suited for growing seaweed, with a stable temperature of between 6C and 11C.

These changes are believed to be the result of climate change. 'We know the water is getting warmer,' says Prof Juliet Brodie, seaweed expert at the Museum. 'It has gone up on average by two degrees ...