Underwater photographer Keith Ellenbogen photographed the Atlantic bluefin tuna both inside and outside of the massive underwater cages used by purse seiner fishing boats on a recent expedition with the watchdog non-profit Oceana. On this expedition, the crew on board the Marviva Med documented the impact of bottom trawling and driftnets on marine ecosystems, and identified marine areas that need protection. Ellenbogen says, “Each year, as they have done for thousands of years, bluefin tuna migrate to the Mediterranean Sea to reproduce. At this moment, I felt a sense of urgency as I observed populations much smaller than expected. I imagined what life must have been like only a few years ago when tuna were abundant, swimming free, and able to reach their true, glorious size.”