Discovery Channel takes viewers to Cape Cod for its newest outdoor adventure offering Harpoon Hunters. The on-the-job series spotlights the multi-generational family business as these fishermen hit the ocean in search of the Atlantic bluefin tuna, which can be worth tens of thousands of dollars. With the fishery setting a quota of a little over 59 metric tons, the competition is high among those on the water. For Captain Joe Dion, it’s about caring for his family. The 38-year-old father of three took two seasons off from the job after his 11-year-old son and 7-year-old daughter were diagnosed with a rare form of muscular dystrophy (Limb-Girdle Muscular Dystrophy 2C). He sold his boat and dedicated much of his life to start a foundation and raise awareness for the cause. However, Dion, who started fishing at 13 and captained his own harpoon boat at 25, couldn’t stay away. He looks to dust...