Swim with the fishes: is tuna tourism just a bit of harmless holiday fun?

Campaigners are concerned at how the tourist treat could affect the species, and how it could become an event like whale watching or shark divingA tall, slim fin slashes the Mediterranean's surface for a split second and the bait fish is gone, provoking a few gasps and some nervous laughs from the 40 or so snorkellers lined up to enter the open-water pen.Most wear wetsuits and clutch masks and air tubes, a few are in swim shorts and goggles. Some have already had a beer or a glass of wine. The midday sun is out, The Trammps' Disco Inferno is playing from the catamaran's speakers and now people are climbing down a stepladder into a ring of netting that stretches 35 metres down into the sea near the Spanish port of L'Ametlla de Mar, about 80 miles from Barcelona. Continue reading...