It thrives and happily jumps over the surface of the water. Öresund has become a haunt for the formerly outfished bluefin tuna. - I have never experienced so much tuna before, says marine biologist Jens Peder Jeppesen at the Öresund Aquarium in Helsingör.
Deep Sea Reporter on research expedition at Skagerrak, to catch and tag the protected bluefin tuna
