Shark / rayOccasional

Whitetip reef shark

Triaenodon obesus

The reef's dozing shark: it rests on cave floors by day, its white-tipped fins recognisable from afar – and there is no reason for anyone to fear it.

Photo: iNaturalist – (c) Luis P. B., some rights reserved (CC BY-NC), uploaded by Luis P. B.

The whitetip reef shark (Triaenodon obesus) is a slender shark of barely a metre and a half, recognisable at first glance by the bright white tips of its dorsal and tail fins. Its narrow, cat-like eyes and flattened head are just as distinctive. Unlike most sharks it does not need to swim constantly to breathe: it can actively pump water over its gills, which lets it lie motionless on the bottom – the very ability that makes it one of the easiest sharks for divers to observe.

Its rhythm is reversed: by day it rests in caves, under ledges and on sand patches, sometimes stacked up with several companions, while at night it becomes a tireless hunter. It worms its way snake-like into reef crevices, seeking out fish asleep in the holes – squeezing where no other predator fits. Towards humans it is completely harmless and shy: if disturbed, it simply swims away.

On Hurghada's daily dive sites any shark encounter is a rare gift, but the whitetip is your best chance: resting individuals are found from time to time in the caves of the deeper, current-swept outer reefs – Umm Gamar and Carless Reef – and beneath the walls of Small Giftun. If you are lucky, hold your position calmly at the cave mouth, never block its exit and keep your torch out of its eyes – and you can admire one of the Red Sea's most elegant residents at length.

Did you know?

The whitetip is faithful to its home: it returns to sleep in the same cave for months or even years – local dive guides know a reef's "permanent residents" individually.

How to behave around it

The whitetip reef shark is shy and poses no danger to humans. If you find a resting individual, do not circle it, never block the cave exit and absolutely do not touch it – keep a few metres' distance and the encounter stays calm for both of you.

Where can you meet it?

Your chances lie on the deeper outer reefs: individuals rest occasionally in the caves and under the ledges of Umm Gamar and Carless Reef, and more rarely one appears along the Small Giftun wall.

Frequently asked questions

There are, but they rarely show themselves at the daily dive sites, and shark attacks are extremely rare events. Reef sharks are decidedly shy: usually it is the shark fleeing the diver, not the other way round. Seeing one is not a danger – it is the highlight of your dive.

Most large sharks do rely on constant swimming to push water over their gills, but the whitetip actively pumps it with its mouth muscles – so it can doze on a cave floor all day long.

Shark sightings around Hurghada are rare but far from impossible: your best odds are on early, deeper dives around Umm Gamar and Carless Reef. Ask your guide to include the known resting caves in the route.