Whitetip reef shark in Los Cabos

How to recognize it

Slender, with a broad, flattened, blunt head, small eyes and tube-shaped flaps on the nostrils. Brownish gray above, paler below, usually with a few scattered dark spots on the body. The tips of the first dorsal fin and the upper lobe of the tail are bright white, and the second dorsal and lower tail lobe are often white-tipped too. The second dorsal is large, about the same size as the anal fin below it, and there is no ridge on the back between the dorsals.

Biology

Whitetip reef sharks live on tropical reefs across the Indian and Pacific oceans, from the Red Sea and South Africa to the Americas. In the eastern Pacific they range from the mouth of the Gulf of California to Colombia, including Cocos and the Galápagos. They stay close to the reef from 1 to 330 m, usually at 8 to 40 m, and spend the day resting in caves, under ledges or on sand patches.

They hunt mostly at night, slipping into holes and crevices for fish, octopus, spiny lobsters and crabs, and many stay in the same small area for months or years, moving only about 0.3 to 3 km. Females have litters of 1 to 5 pups, usually 2 or 3, born at 52 to 60 cm after a pregnancy of at least five months. They mature at about 1.05 to 1.1 m and live about 25 years.

How it's caught in Los Cabos

The whitetip reef shark is a snorkel and dive shark, not a fishing target. Around Los Cabos look for it resting under rocks and ledges at reef sites in Cabo San Lucas, the Corridor and Cabo Pulmo. Keep your distance, don’t touch it or block a cave entrance, and never feed it: in places where sharks are fed, some learn to approach people and boats.

If one is hooked by accident, we release it. Best practice: circle hooks that aren’t stainless steel, keep the shark in the water, unhook it quickly or cut the leader close to the hook, and hold it facing forward while the boat moves slowly so water runs over its gills. Never lift a big shark by the tail or gills.

Rules, records & conservation

Top Anglers practices catch-and-release for all sharks.

Don't confuse it with

The oceanic whitetip lives far offshore and is much bulkier, with a huge rounded first dorsal, long paddle-shaped pectoral fins and mottled white fin tips. The silvertip shark is heavier, with white edges on all its fins rather than white tips on just a few. Blacktip sharks have black, not white, fin tips.

Questions

By Max VargasTop Anglers, Cabo San Lucas · international judge at big game fishing world championships · reviewed October 2026

Sources

• FishBase: Triaenodon obesus
• Smithsonian STRI: eastern Pacific fishes, Triaenodon obesus
• Florida Museum: whitetip reef shark
• López-Garro et al. 2020, whitetip residency at Isla del Coco (Rev. Biol. Trop.)
• Reef Life Survey: Triaenodon obesus
• Asúnsolo-Rivera 2016, sharks of Cabo Pulmo reef (UABCS thesis)
• iNaturalist: whitetip reef shark at Chileno Bay, July 2025
• GBIF: Triaenodon obesus occurrence records (iNaturalist, Diveboard, SIO)
• FRDC whitetip reef shark report card 2023 (CITES)
• Florida Museum, International Shark Attack File: species implicated
• IGFA world records: whitetip reef shark
• NOM-017-PESC-1994, 2013 amendment (DOF)
• Shark closed season agreement, 2012 (DOF)

Top illustration: Top Anglers. Photos: iNaturalist contributors, credited on each photo.