What Divers Should Know About Whale Shark

As the largest known extant fish species, the whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpet shark. With the largest reliably recorded individual measuring an astounding 18.8 meters (61.7 ft), these gentle giants are the most massive living non-cetacean animals. Their distinctive dark grey skin, adorned with a unique arrangement of pale spots and stripes, makes each whale shark individually identifiable.

Primarily pelagic, whale sharks inhabit the open waters of all tropical oceans, preferring temperatures above 21°C (70°F). While they are often observed engaged in inshore surface swimming between sunrise and mid-afternoon, particularly off locations like the northeast Yucatan Peninsula, tracking devices reveal their dynamic vertical movements. They regularly undertake deep dives, often exceeding 500 meters (1,600 ft), with the deepest recorded descent reaching an incredible 1,928 meters (6,325 ft). These magnificent filter-feeders can live for an estimated 80 to 130 years, gracing our oceans for generations.