This tutorial shows you how to use chlorophyl imagery to locate blue water offshore to find big-game fish like marlin, tuna, mahimahi or dolphin fish and wahoo. Bait and predatory fish often stack up where warm blue water converges with green or brown water. You can use the chlorophyl satellite imagery on FishTrack.com to find these convergence zones. Using SST charts and satellite imagery will help you find fish. Check the satellite imagery on FishTrack.com or the FishTrack app before you leave the dock to save yourself valuable time and fuel.