The dusky shark swims in tropical and temperate oceans worldwide, cruising from depths of 1,300 feet near the continental shelf all the way in to the surf zone and other shallow inshore waters.
Dusky sharks, also known as bronze or black whalers, are long-distance swimmers known for seasonal, temperature-driven migrations that males and females undertake in separate groups. Local patterns vary but the sharks often head toward the Poles in summer and return to the Equator in winter on sea voyages that have been known to top 2,000 nautical miles.
Despite their wanderlust, adult female dusky sharks are homebodies when it comes to reproduction. These animals give birth in the same continental regions where they were born. This natal site fidelity means