Marine biologists at Swansea University say it was a bigeye tuna - usually found warmer waters in open oceans.
Weighing 83.5lb (38kg) and measuring 1.34m in length they said it was a "very unusual find."
The tuna, which was put into deep freeze at a Swansea fish firm after being brought ashore, has since been passed on to the university's department of biological sciences. |
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