Tuna has been one of my passions for many years. I fished for them when I was younger and photographed them as I got older. I dreamt of one day seeing the biggest tuna of them all, the Atlantic bluefin. I was fortunate to be a still photographer on the Galatee Films / Disney Nature film project, Oceans. For two days we were allowed to film in a commercial tow net in the Mediterranean. The fish were huge and beautiful. I had wanted a portrait of the fish and used an unusual underwater combination of a dome port with the Canon 24–105mm zoom, at the long end.
High demand for Atlantic, Pacific and southern bluefin tuna in high-end sushi and sashimi markets (a single fish has sold for over USD1.75 million) has led to overfishing and illegal fishing, causing their populations to decline severely over the past few decades. A top predator in the marine food chain, they help maintain a balance in the ocean environment. The World Wildlife Fund has been tagging the Atlantic bluefin tuna in the Mediterranean Sea to learn more about their migratory behaviours and advise fishery managers how best to protect the species.