Named spots
| Spot | Type | Depth | From nearest port |
|---|---|---|---|
| Amphitheatre Escarpment | feature | – | – |
| Anegada Gap | canyon | 899 fm | – |
| Desecheo Valley | canyon | 1921 fm | – |
| Engaño Canyon | canyon | – | – |
| Frederiksted Canyon | canyon | 591 fm | – |
| Ginger Hole | feature | 1423 fm | – |
| Grappler Seamount | bank | 28 fm | – |
| Guayanilla Canyon | canyon | 1998 fm | – |
| Iahi Saddle | feature | 736 fm | – |
| Investigator Canyon | canyon | 467 fm | – |
| Jagüey Spur | feature | 1669 fm | – |
| Loiza Canyon | canyon | 1947 fm | – |
| Mameyes Canyon | canyon | 958 fm | – |
| Molinos Canyon | canyon | 811 fm | – |
| Mona Spur | feature | – | – |
| Mona Trough | canyon | 2691 fm | – |
Nearby buoys
2026-10-19 05:48 UTC · NOAA NDBC 9751401
2026-10-19 05:48 UTC · NOAA NDBC 9751364
2026-10-19 05:48 UTC · NOAA NDBC 9759394
2026-10-19 05:48 UTC · NOAA NDBC 9752235
2026-10-19 05:48 UTC · NOAA NDBC 9751381
2026-10-19 05:26 UTC · NOAA NDBC 41115
Latest NOAA NDBC observations. Satellite and in water readings may differ.
Fishing Puerto Rico / Virgin Islands
Puerto Rico and the Virgin Islands give you deep water almost absurdly close to the beach, and the chart is built to exploit that. Off San Juan, around St Thomas and down to St Croix, the bottom falls away fast, and the famous North Drop sits within a short run as one of the best blue marlin grounds anywhere on earth. The South Drop works the same idea on the other side. Short runs to deep water mean the edges you want are rarely far off.
Blue marlin are the headline, strongest from summer into the fall along the North Drop and South Drop, with wahoo, yellowfin and blackfin tuna, and mahi filling the calendar around them. Hunt the dropoff first. Then layer in the temperature breaks and the chlorophyll color changes that ride along that structure, because a marlin working bait wants the same convergence of clean blue water, a defined edge and deep relief that the chart is showing you.
The method is to stack signals. Find the SST break, find where chlorophyll shifts from clear blue toward greener water, and see where those lines fall over the drop rather than out in dead blue. When a break and a color edge sit right on the North Drop contour, that is a high percentage place to start the day and work from.
Use this as planning intelligence, not a guarantee and never for navigation. Runs, seasons and regulations change every year, so check current Puerto Rico and US Virgin Islands rules before you go. The chart points you at the few edges worth your fuel, and the rest is still up to the fish and the day.
What you get with ReelTemps
- Sea surface temperatureFind the temperature break
- Chlorophyll-aSpot the green-to-blue color seam
- Composite & single passBlended picture or the freshest overpass
- CompareTemperature and color side by side
- Depth readoutFathoms and feet on hover, tap or mark
- Currents & buoysSee the water move and ground-truth it
- Route, ruler & waypointsPlan the run and save your spots
From the water
I've tried every temp map out there and they all feel like they were built ten years ago. I'm not exactly a tech guy, but this one actually makes sense the second you open it. First time using it, I marked a break in about 30 seconds the night before and boated bluefin right on it the next morning.
Used to burn half a tank driving around looking for color change or a solid temp break. Now I check ReelTemps before I leave the dock and I know exactly where I'm going. Less time driving around guessing, more time with lines in the water.
Albacore season used to mean a couple hours of homework the night before and just hoping it held up. Now I do most of my research that morning and pull it up on my phone if things change once we're out there. Makes calling an audible a lot easier.