Florida International University Study Reveals Great Hammerhead Sharks Outsmart Ocean Temperature Swings Through ‘Thermal Hustle’

FIU researchers find great hammerhead sharks maintain peak hunting speeds across varied ocean temperatures, potentially aiding their survival in a warming climate.

By: AXL Media

Published: Mar 31, 2026, 5:05 PM EDT

Source: Information for this report was sourced from Florida International University

Advanced Biologging Technology Tracks Predator Performance Across Seasons

Researchers at Florida International University have uncovered a unique physiological advantage that allows great hammerhead sharks to remain elite hunters regardless of seasonal temperature fluctuations. By utilizing advanced biologging tags on nine sharks in the waters off Florida and the Bahamas, the scientific team tracked real-time movement, acceleration, and depth alongside ambient water temperatures. This data allowed the researchers to construct the first "thermal performance curve" for the species, revealing a surprising level of resilience in their metabolic and physical output as they navigate the changing Atlantic environment.

Peak Hunting Agility Maintained Despite Significant Water Temperature Shifts

The study, published in the Journal of Experimental Biology, indicates that while the ideal temperature for a great hammerhead is approximately 84.7 degrees Fahrenheit, their performance does not drop sharply when the water cools or warms. This biological flexibility, termed the "thermal hustle," ensures that the sharks can effectively pursue high-speed prey such as blacktip sharks during the winter months and transition to hunting tarpon or barracuda in the heat of summer. Unlike many other marine predators that experience a significant decline in speed and metabolic function outside of a narrow thermal window, the hammerhead remains a constant threat.

Potential Resilience to Climate Change Compared to Other Marine Species

Yannis Papastamatiou, an associate professor at FIU’s Institute of Environment, suggests that this thermal tolerance may give great hammerheads an edge as global ocean temperatures continue to rise. Because their rate of performance decline is relatively low, they are theoretically better equipped to handle shifting climates than more temperature-sensitive species. However, this flexibility does not mean the sharks are immune to environmental pressures, as their movement patterns are still heavily influenced by a preference for their optimal 84.7-degree environment, which dictates their migratory routes and seasonal habitats.