Across two spawning seasons, researchers have exposed Atlantic cod to powerful blasts from airguns during spawning and tracked the behaviour of the fish. The results have now been published.
Before surveying the area, scientists expected to find large areas of untouched seabed – and the odd trawl mark left by fishing boats. What they actually found was nothing like that.
One was eaten by a whale, another caught by a local fisherman called Håkon, and three returned to the same spot they were tagged a year ago.
This autumn there has been a big increase in the number of string jellyfish along the coast. This colonial jellyfish can reach lengths of up to 30 metres and it can be fatal to farmed fish.
Haddock larvae swam more slowly after being exposed in the laboratory to magnetic fields similar to those created by undersea cables connecting offshore wind farms.
“Good news in times of climate change.”
