Warm Atlantic waters draw tropical game fish and sharks to New York shores

New York’s coastal waters are experiencing a noticeable influx of tropical species as summer sea temperatures climb, according to one outlet charter captains and scientists. Arthur Cortes, who runs Cortes Outfitters, says his trips now regularly net 15-20-pound mahi-mahi and occasional 60-pound specimens, a fish once rare this far north. Veteran captain Vinnie Calabro highlights the growing popularity of cobia, which he describes as a trophy-size, cost-effective alternative to bluefin tuna charters.

Researcher John Waldman of Queens College CUNY points to a documented 2°F increase in regional water temperatures over the last 20 years, a rate five times faster than the global average, as the driver of this northward migration. The warmer conditions have also drawn large predators; shark fisherman Justin reports catching multiple bull sharks, some nearing nine feet, along New York beaches. While the new quarry extends the fishing season beyond the traditional striped bass period, experts caution that continued warming could allow these exotics to establish breeding populations, potentially reshaping the local marine ecosystem.