Deep Sea FishingThe island of St. Maarten and St. Martin is an excellent destination for deep sea saltwater fishing, with great opportunities to catch a wide variety of fish off its shores. Charter fishing boats in St. Maarten head offshore for fantastic big game fishing. They venture into the Caribbean Sea and Atlantic Ocean in pursuit of sailfish, marlin, tuna, king mackerel, dolphin, wahoo, amberjack, and barracuda.