When most people picture a shark, they imagine something sleek and restless. The nurse shark breaks that picture completely. It is a big, brownish, bottom-dwelling shark that spends most of the day lying still on the sand or wedged under a ledge, often in a pile with two or three others. For many of our guests it is the first shark they ever see underwater, and the moment usually ends with a grin rather than a fright.

That calm reputation is deserved, but it comes with a footnote. Nurse sharks are wild predators with powerful jaws, and almost every bite on record involves someone grabbing, riding or cornering one. Watch them, photograph them, and leave them in peace, and they will ignore you completely.

Quick Facts

Name: nurse shark, Ginglymostoma cirratum
Size: adults are usually 2.2–3 m (7–10 ft); the largest recorded reach about 4 m
Diet: lobsters, crabs, shrimp, octopus, sea urchins, conchs and small fish
Activity: nocturnal; rests by day in caves, under ledges and on open sand
Depth: mostly shallow reefs from 1 m to around 40 m, occasionally deeper
Range: tropical and subtropical western Atlantic (including the whole Caribbean) and the coast of West Africa
Status: listed as Vulnerable by the IUCN, mainly because of fishing pressure across its range

How to Recognize a Nurse Shark

Nurse sharks are easy to tell apart from the other sharks you might meet in Punta Cana. Look for a broad, flattened head with a small mouth set well in front of the eyes, and two fleshy whisker-like barbels hanging from the nostrils. The two dorsal fins are rounded, almost the same size, and set far back on the body, and the tail is long with a weak lower lobe, so the shark looks like it is swimming with a paddle rather than a blade.

Color ranges from yellowish tan to deep brown, without the white belly contrast of a Caribbean reef shark. Juveniles can carry small dark spots that fade with age. The eyes are tiny compared with other sharks, a hint that this animal hunts by touch and smell more than by sight.

Behavior: Why They Lie So Still

Most sharks have to keep swimming to push water over their gills. Nurse sharks do not. They can pump water over their gills with the muscles of their mouth and throat, which is why you can find one resting motionless on the sand for hours. During the day they often share the same resting spot, sometimes stacked on top of each other under an overhang.

At night they wake up and patrol the reef slowly, sweeping the bottom with their barbels. When they find prey hidden in a crevice they use one of the strongest suction-feeding mechanisms of any shark: the throat expands and pulls a lobster or an octopus straight out of its hole. That is the source of the slurping sound divers sometimes hear on night dives.

Nurse sharks give birth to live young. The eggs hatch inside the mother and a litter of 20 to 30 pups is born, usually every second year because the female needs time to recover between pregnancies.

Where to See Nurse Sharks in Punta Cana

Our most reliable nurse shark encounters happen at Shark Point, a deep reef 15 to 20 minutes by boat from our Cabeza de Toro base, at 24 to 30 m (80 to 100 ft). The site is part of our shark dive in Punta Cana, where nurse sharks share the reef with blacktip sharks and Caribbean reef sharks. There are no cages and no bait: the sharks are simply there, going about their day. Because of the depth, the dive is for Advanced Open Water divers or Open Water divers with at least 20 logged dives.

On our shallower local reefs a nurse shark is a lucky but not unusual sighting, most often a single animal resting under a ledge or in a sand channel. Look into the shaded gaps beneath coral heads and overhangs: very often the first thing you notice is the tail sticking out. Snorkelers occasionally see young nurse sharks in calm shallow water too, but adults prefer deeper, quieter ground.

You will find the nurse shark on our species guide, together with the other animals our guides meet most often.

Diving Etiquette and Photo Tips

Never touch, grab or block a resting shark. A nurse shark that feels trapped can bite, and its grip is famously hard to break.
Approach slowly from the side, at the shark's level, and keep your fins off the bottom so you do not stir up sand.
Give the animal an escape route. If it starts to move, let it go rather than following.
A wide-angle lens gets the whole body in frame; a low angle, shooting slightly upwards, makes the most of the head and barbels.
Keep your buoyancy steady. Hovering still is what makes these encounters long and relaxed for everyone.

Frequently Asked Questions

Are nurse sharks dangerous to divers?

Not when they are left alone. Nurse sharks show no interest in divers, but they can bite defensively if someone touches, pulls or corners them. Respectful distance is all that is needed.

Do nurse sharks have teeth?

Yes, rows of small, serrated teeth made for crushing shells rather than cutting. Combined with strong jaws and suction, that is enough to deal with lobsters and conchs.

Can I see nurse sharks on a beginner dive?

Sometimes. Lucky sightings happen on our shallower reefs, but the most dependable encounters are at Shark Point, which requires Advanced Open Water or 20 logged dives. Our PADI Advanced Open Water course is the usual path to that dive.

Why are they called nurse sharks?

Nobody knows for sure. The most common explanations point to the sucking sound they make when feeding, or to an old word for a type of shark. It has nothing to do with caring for their young.

Want to see one for yourself? Join us on the Punta Cana shark dive and meet the calmest shark on the reef, in its own home and on its own terms.