A large great white shark, nicknamed Contender, has reappeared along the US East Coast after an absence of several months. The 13-foot, nine-inch male shark weighs nearly 1,700 pounds. OCEARCH, a non-profit organization dedicated to shark research and ocean conservation, reported that Contender's tracking tag briefly reactivated on July 10, indicating his presence near the East Coast.
Researchers first encountered and tagged Contender on January 17, 2025, approximately 45 miles off the Florida-Georgia coast. The satellite tag attached to his dorsal fin sends location data when the shark surfaces. Since being tagged, Contender has traveled extensively, migrating north along the coasts of North Carolina, New Jersey, and Massachusetts's Cape Cod in search of food.
Contender's last known location was near North Carolina in late April 2026. The recent signal, described as a 'Z-ping,' was a brief surface event that did not provide enough data for the Argos satellite system to pinpoint his exact current location. Argos satellites require a sustained signal, with the entire dorsal fin visible, to determine a shark's precise position in real time.
OCEARCH has identified Contender as the largest male white shark they have tagged within the North Atlantic population. The reappearance confirms the shark is alive and active, though his current whereabouts remain undetermined. Scientists hypothesize he may be in new hunting grounds in the North Atlantic.
Recent research suggests a resurgence of great white sharks in waters off Cape Cod. A 2023 study published in Marine Ecology Progress Series estimated that around 800 individual great white sharks visited the area between 2015 and 2018. Contender himself was observed near the Massachusetts coast approximately one year ago, an area known for its seal population, a primary food source for great whites.
Last September, Contender was tracked traveling into Canadian waters, approaching the Gulf of St. Lawrence in Quebec, over 1,200 miles from his last known position near North Carolina. He has also been sighted near Cape Breton Island in Canada and off the coast of Florida during the past winter, coming close to beaches in St. Augustine, Daytona Beach, and Port St. Lucie.
As beach season intensifies, scientists anticipate an increase in shark encounters due to greater human presence in coastal waters, particularly in areas identified as shark hunting grounds. Environmental and wildlife protections enacted in the US over the last 30 years are credited with significant improvements in shark populations. These protections, coupled with restored food sources, have contributed to the recovery of shark numbers.
Chris Fischer, founder of OCEARCH, noted that the ocean's abundance is leading to more frequent sightings of marine life, which may appear unusual but represent a healthy ecosystem. He estimates that tens of thousands of great white sharks, possibly over 10,000, may be present in US waters, with OCEARCH having tagged only a small fraction of the total population. Research from the Florida Museum indicates Florida, Hawaii, and California are the states with the highest likelihood of shark bites, though incidents have also occurred in the Carolinas, near Texas, and off Long Island, New York.