Whitetip Reef Sharks: Socorro Islands

The Revillagigedo Archipelago lies approximately 390 kilometers (240 miles) off the coast of Cabo San Lucas in Mexico. These Pacific islands are more commonly referred to as the Socorro islands. Aboard the Southern Sport, we dove 3 of the 4 islands (Roca Partida, San Benedicto, and Socorro). The whitetip reef shark (Triaenodon obesus) is common here.

Whitetip Reef Shark Swimming At El Canyon Dive Site At San Benedicto Island
Male Whitetip Reef Shark. The Reproductive Claspers Are On The Bottom

The whitetip reef shark rarely exceeds 1.6 meters (5 feet). It is nocturnal and rests during the day under ledges and caves.  At Roca Partida, we observed many groups of whitetip reef sharks congregating in groups of 3 to 15 on the ledges. By approaching them slowly we were able to capture this behavior.

Group Of Five Whitetip Reef Sharks On Ledge At Roca Partida


Group Photos Are Possible By Approaching These Sharks Slowly


These sharks hunt at night and eat mainly crustaceans like crabs, lobsters, and shrimp as well as bony fishes. They tend to hunt in groups. During the day, it was interesting to observe many large lobsters out in the open just a few feet away from the whitetip reef sharks. Apparently, the lobsters know that they are safe from these sharks during the day.

If Disturbed Whitetip Reef Sharks Swim A Short Distance And Return To Their Ledge.
Pregnant Female Cruising Over The Volcanic Island Known As Roca Partida.


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