Tuna Ridge is a run of bottom structure that follows the 30-fathom curve south of Block Island. That structure holds bait and draws the marine mammals and tuna that feed on it, making it a productive stretch to work along the curve.
The ground
Follow the 30-fathom curve and the structure along it. The consistent depth line concentrates bait and predators, so the curve itself is your road map.
How to fish it
Troll along the curve to find fish and jig the marks. Watch for whales and bird life along the ridge, they point to the tuna.
Tip Fish the depth line, not a single spot. Tuna Ridge is a stretch of structure along the 30-fathom curve, so troll the curve and let the bait, whales and marks show you where to slow down.
About the coordinates The coordinates on this page are an approximate reference to orient you, not a navigation waypoint. Fish move, and numbers vary boat to boat, get exact, current marks locally and always run on a plotter with proper charts.
Regulations Tuna are federally managed highly migratory species requiring an HMS permit, with category, size and retention rules that change through the season. Confirm current rules with NOAA Fisheries HMS before fishing.