Sand Tiger Shark

Sand Tiger Shark facts at a glance

How big is a sand tiger shark?

An adult sand tiger shark measures 3 m long — about 1.7× the height of an average adult person (1.73 m) — and weighs around 150 kg, about 2.1× an average adult’s body weight (70 kg).

What is a group of sand tiger sharks called?

Explore more animal collective nouns and baby animal names .

Appearance and teeth

The sand tiger shark has a stout, brownish-grey body, a pointed snout, and small eyes, often speckled with reddish or dark spots along the flanks. Its most striking feature is its mouth, which stays slightly open to reveal rows of long, narrow, backward-curving teeth even when relaxed. These needle-like teeth are perfect for gripping slippery fish but are not designed for cutting, which is why the shark swallows most prey whole or in large pieces. This toothy grin gives it a menacing look that belies its calm nature.

The gulping-air trick

Sand tiger sharks are the only sharks known to gulp air at the surface and hold it in their stomachs to achieve near-perfect buoyancy. This lets them hang almost motionless in the water, hovering silently above the seabed as they wait for prey. The ability makes them energy-efficient ambush hunters and is one reason they thrive in aquariums, where they can be seen suspended in mid-water. No other shark uses this method of controlling its depth.

Hunting and diet

As a carnivore, the sand tiger shark preys on bony fish, squid, rays, and smaller sharks. It is mainly a nocturnal hunter, using its buoyancy and slow, deliberate swimming to sneak up on prey before a quick lunge. Sand tigers sometimes cooperate to herd schools of fish into tighter groups, making them easier to catch. Despite the fearsome dentition, their diet is dominated by fish they can swallow rather than large struggling prey.

Habitat and range

Sand tiger sharks live in warm and temperate coastal waters around much of the world, favouring sandy nearshore zones, rocky reefs, and submerged ledges. They are typically found from the surf line down to depths of around 190 metres and often shelter in caves and gullies by day. Individuals may undertake seasonal migrations, moving toward the poles in summer and back toward the equator in winter. Their preference for shallow coastal water brings them into frequent contact with divers, who generally find them placid.

Reproduction and embryo rivalry

Sand tiger sharks have one of the most extraordinary reproductive strategies in the animal kingdom, known as intrauterine cannibalism. The first embryo to develop in each of the two uteruses eats its smaller siblings before birth, so a female typically gives birth to just two well-developed pups. Each pup emerges around a metre long and ready to fend for itself. This low reproductive rate means populations recover very slowly from any decline.

Why it is vulnerable

The sand tiger shark is listed as Vulnerable by the IUCN, largely because it produces so few young. Overfishing, accidental capture in nets, and historic culls near beaches have driven serious declines in several regions. With a wild lifespan of only about 12 to 15 years and just two pups per litter, the species cannot quickly replace lost numbers. Protective legislation now shields it in a number of countries, including much of its range in Australia and the United States.

Did you know? Sand Tiger Shark facts

• Sand tiger sharks expose rows of pointed teeth even when mouth is closed.
• Unrelated — sand tigers are smaller, coastal, and far less dangerous.
• Vulnerable — slow reproduction makes recovery difficult.
• Conservation: Vulnerable.

Diet & feeding

Sand Tiger Shark feeds primarily as a fish and squid. Embryos eat siblings in utero — only two pups born per litter.

Adaptations

• Sand tigers gulp air at the surface to adjust stomach buoyancy.
• Embryos eat siblings in utero — only two pups born per litter.

Behaviour & ecology

• Sand tigers gulp air at the surface to adjust stomach buoyancy.
• Embryos eat siblings in utero — only two pups born per litter.

Communication

• Lateral-line and visual cues coordinate schooling, courtship, or territorial behaviour.
• Some species produce low-frequency sounds or drumming for spawning or defence.

Habitat & range

Coastal waters worldwide

Ecological role

Sand Tiger Shark occupies a defined trophic level in aquatic food webs, linking plankton or smaller fish to larger predators.

Conservation status of the Sand Tiger Shark

Sources & references

This guide is compiled and reviewed against established zoological and conservation references. Key sources for the Sand Tiger Shark:

• IUCN Red List of Threatened Species

  Conservation status (Vulnerable) reflects the IUCN Red List category for Carcharias taurus.

• iNaturalist — observations & photos

  Search citizen-science observations and community IDs for Carcharias taurus. Useful for range checks and recent sightings — not a substitute for formal Red List status.

• GBIF — occurrence data

  Global Biodiversity Information Facility species search for Carcharias taurus. Explore published occurrence records used in range research.

• IUCN Red List — Carcharias taurus.

  Conservation status (Vulnerable) and population trends.

• Animal Diversity Web — Carcharias taurus. University of Michigan Museum of Zoology.

  Life history, morphology, and range.

• Global Animal Guide editorial standards

  How we research, source, review, and update every guide for accuracy.