In a study published last year in Conservation Letters, a group of scientists led by Brian MacKenzie, of the Technical University of Denmark, describe how they ran a computer model of the bluefin tuna's population dynamics.

ECONOMIST: Efforts to ban the international trade in bluefin tuna

One that has is a Danish company called Crystal Fibre, a spin off from the Technical University of Denmark.

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The Technical University of Denmark is also a collaborator on the project.

BBC: Walruses (Image: BBC)