Science

The Dominant Force: Meet Contender, the Titan Great White Shark Threatening the Atlantic

2025-09-03

Author: Jia

Introducing Contender: The Mighty Male Predator

In a thrilling encounter, OCEARCH, a dedicated marine research non-profit, tagged and released Contender, the largest male great white shark in the North Atlantic, on January 17, 2025, just off the coast of Florida and Georgia.

A Journey Like No Other: Tracking Contender's Mysterious Movements

Since his release, Contender's movements have caught the attention of marine researchers. After traveling south along Florida’s coast, he mysteriously vanished for nearly four weeks, only to resurface off North Carolina in April. He lingered there until June before going quiet again. His latest signal on July 18 placed him near the bustling waters of Cape Cod, a hotspot known for shark sightings.

The Great White Phenomenon: A Closer Look at Their Migration Patterns

Great white sharks, scientifically known as Carcharodon carcharias, are notorious for their epic migrations that can span thousands of kilometers across the globe. However, they mostly stay within three genetically distinct populations: the North Atlantic/Mediterranean, the North Pacific, and the Indo-Pacific. These lineages have been separated for between 100,000 to 200,000 years, leading to rare interactions among them.

Contender: A Giant Among Giants

Weighing in at approximately 750 kilograms (1,653 pounds), Contender is a remarkable specimen among male great whites. While female sharks often dwarf their male counterparts, towering between 4.6 to 4.9 meters (15 to 16 feet), Contender commands respect at 4.3 meters (14 feet) in length and is a vital player in the rebuilding of his species' population.

Expert Insights: The Importance of Contender in the Ecosystem

Dr. Harley Newton, OCEARCH’s chief veterinarian, shared insights on Contender’s vital role, stating, "Although adult-sized sharks are elusive, Contender, at 14 feet in length, is a mature male likely in his early 30s. He stands as an essential contributor to the breeding population of western North Atlantic great whites."

Who Are the Other Giants? A Peek at Rival Sharks

OCEARCH has tagged larger female great whites, like Mary Lee, who measures 4.8 meters (16 feet) and weighs about 1,197 kilograms (2,639 pounds), and Nukumi, a colossal female at 5.2 meters (17 feet 2 inches), who has been silent since 2021.

The Legendary Deep Blue: The Largest Recorded Great White Shark

The largest great white ever recorded is the enigmatic Deep Blue, a female measuring over 6 meters (20 feet) long and believed to be around 50 years old. First spotted in the 1990s, Deep Blue has become a subject of intrigue due to limited confirmed sightings and footage, keeping her whereabouts shrouded in mystery.