5 Fascinating Facts About the Tiger Shark
Quick answer: Tiger sharks (Galeocerdo cuvier) are large apex predators best known for their serrated, sideways-curving teeth, an almost indiscriminate diet, and ranking second only to the great white for recorded unprovoked bites on humans. Below are five facts that explain why — plus how to identify a genuine tiger shark tooth.
The tiger shark is one of the ocean's most misunderstood predators. Known for its bold stripes and fearsome reputation, it's both feared and admired. Beyond the headlines, tiger sharks hide some genuinely fascinating biology. Here are five facts that may change the way you see them.
1. What Do Tiger Sharks Eat? Almost Anything
Nicknamed the garbage cans of the sea, tiger sharks are infamous for eating just about anything — fish, turtles, seabirds, and occasionally man-made debris found in their stomachs. This near-indiscriminate appetite plays a real ecological role: tiger sharks remove weak, injured, and dead animals, helping keep reef and coastal ecosystems balanced. Indigestible objects are often regurgitated rather than dissolved, but their strong stomach acids let them process prey that defeats most other predators.
2. Tiger Shark Teeth Are Built Like a Saw — and Constantly Regenerate
Tiger shark teeth are unlike any other shark's. Each tooth has a broad, sideways-pointing cusp with a deeply serrated "cockscomb" edge — coarse primary serrations that themselves carry finer secondary serrations. This design slices through sea turtle shells and bone that few other sharks can handle. Like all sharks, they replace teeth continuously throughout life, with a new tooth ready in days. That distinctive shape is exactly what makes an authentic tiger shark tooth necklace so recognisable.
3. How Do Tiger Sharks Navigate? Night Hunting and Long-Distance Migration
Tiger sharks are largely solitary, nocturnal hunters that feed under cover of darkness. They're also long-distance travellers: individuals have been satellite-tracked moving thousands of kilometres across open ocean between feeding and breeding grounds. Researchers believe sharks may use the Earth's magnetic field to orient over these distances — a sense demonstrated in some shark species and still being studied in tiger sharks specifically.
4. How Do Tiger Sharks Reproduce?
Unlike many fish that lay eggs, tiger sharks are ovoviviparous — the eggs hatch inside the mother and she gives birth to live young. A single female can deliver a large litter, in some cases up to around 80 pups, each roughly 50–75 cm long at birth. The pups are fully independent from day one, with hunting instincts active almost immediately.
5. Are Tiger Sharks Dangerous to Humans?
Tiger sharks account for the second-highest number of recorded unprovoked bites on humans, after the great white (International Shark Attack File). What sets them apart is curiosity: they tend to investigate unfamiliar objects with an exploratory "test bite" rather than swimming away. That boldness makes them effective apex predators — and explains their reputation — but attacks remain rare relative to the number of human–shark encounters each year.
How to Identify a Real Tiger Shark Tooth
Because we handle genuine teeth every day, here's how to tell an authentic tiger shark tooth from a replica or a misidentified species:
- Shape: a broad, curved cusp that angles sharply to one side — not a straight, symmetrical triangle.
- Serrations: the giveaway. Coarse primary serrations along the edge, each carrying its own finer serrations (the "cockscomb" pattern). Replicas usually have smooth or evenly spaced edges.
- Symmetry: upper and lower teeth look very similar, unlike many other shark species.
- Colour: genuine modern teeth range from off-white through grey to brown; colour is consistent across the tooth, not painted on.
- Size: most sit between roughly 2.5 and 5 cm — large for a tooth, reflecting the shark's size.
Tiger Shark Tooth FAQs
Are tiger shark teeth ethically sourced?
Ours are. Every tiger shark tooth we sell is a fishery by-product — recovered from sharks already caught in regulated commercial fisheries, never from targeted or protected hunting.
How can you tell a real tiger shark tooth from a fake?
Look at the serrations and the curved, sideways cusp (see the identification guide above). The double-layered "cockscomb" serration is very hard to fake convincingly.
How big do tiger shark teeth get?
Most genuine teeth measure around 2.5–5 cm, depending on the size of the shark and its position in the jaw.
Do tiger sharks lose their teeth?
Constantly. Sharks shed and regrow teeth throughout their lives, which is why genuine shed teeth are available without harming live animals.
Own a Piece of Oceanic History
If these predators fascinate you, consider a real tiger shark tooth necklace or an authentic tiger shark jaw — ethically sourced marine artifacts that make striking conversation pieces.
Explore the full collection of shark teeth jewellery and real shark jaw sets.