As you head west on the seven mile bridge, a panorama of aquamarine fills your field of vision. It’s quite the welcome to the Lower Keys, the low-key island chain, free of high-rises and hustle and bustle. Preferred past times include diving, birding, and fishing – all of which typically end with a life-changing sunset. The Dolphin Fish Research Program is the world’s largest angler run investigation into the life and migrations of the species, and when it comes to tagging dolphin for this initiative, one captain in the Lower Keys is heads and tails above the rest. Meet Captain Don Gates, who has tagged hundred dolphins over 21 years.