15-Foot Tagged Shark Baffles Experts, Ventures Beyond Carolina Waters

A large white shark tracked off the U.S. East Coast has surprised researchers by moving far south. The animal left its usual Carolinas range and is now deep into the West Indies.

Unexpected southern move

On March 29, the shark’s satellite tag recorded a position about 104 miles off Grand Turk Island. This location lies in southeastern Turks and Caicos.

OCEARCH says it is the southernmost point recorded for a western North Atlantic white shark they have tracked. The movement marks a major departure from the shark’s seasonal pattern.

Where and when the shift began

Satellite maps show the shark was off Wilmington, North Carolina, on Christmas Eve. Suddenly, it moved roughly 250 miles offshore and started heading south along the Continental Shelf.

Tagged shark profile and tracking data

Researchers first tagged the animal off Nova Scotia in September 2020. At tagging, he measured 13 feet, 3 inches and weighed 1,437 pounds.

OCEARCH estimates he has since grown to nearly 15 feet. Journey logs list more than 50,347 miles traveled since tagging.

Tag longevity raises questions

The satellite transmitter continues to send data despite surpassing its expected five-year battery life. Scientists call the continued signal unexpected.

The prolonged transmission complicates efforts to explain why the shark ventured so far south.

Behavioral context and hypotheses

Great white sharks often move north in summer and south in winter. Researchers link that pattern to water temperature preferences and prey migrations.

OCEARCH has observed the shark shifting between offshore and inshore waters each December. The group suggests those moves might relate to mating, but it remains unproven.

Why this case matters

The nearly 15-foot tagged shark baffles experts due to its unusually southerly presence. Its journey into the West Indies offers rare data for scientists.

Tracking such deviations helps refine understanding of migration, habitat use, and population connectivity.

About the research effort

OCEARCH is a nonprofit that tags and releases great white sharks to study their movements and biology. The organization shares real-time locations and analysis.

Reporting and credits

This story was compiled from OCEARCH tracking updates and reporting by Mark Price. Price is a state reporter for Filmogaz.com and affiliated McClatchy outlets.