Great White Shark: Facts, Size, Attacks & Predators

Few creatures spark as much fascination—and fear—as the great white shark. For decades, movies and headlines have painted it as a mindless man-eater, but science tells a more nuanced story. This guide separates myth from fact, covering the shark’s real size, its role as an apex predator, the surprisingly rare attacks on humans, and the one animal that can take it down—the orca.

Average length (female): 15–16 feet ·
Maximum recorded length: 21 feet ·
Weight range: 680–1,800 kg (1,500–4,000 lbs) ·
Number of teeth: ~300 ·
Top speed: Up to 25 mph ·
Conservation status: Vulnerable

Six key statistics that define the great white shark at a glance:

Are great white sharks in Ireland?

Sightings around the British Isles

Great white sharks have been sighted near Ireland and the UK, but confirmed reports are rare. The most widely cited recent sighting occurred off the coast of Cornwall, England, in 2016, according to 2SeeWhales. That area is roughly 300 km from the Irish coast—within striking distance for a roaming shark. However, no scientifically verified observation in Irish waters has been published.

Water temperature preferences

Great whites prefer temperatures between 12°C and 24°C. The sea around Ireland averages 10–15°C, which sits at the lower end of their tolerance. A 2018 study cited by White Shark Divers shows that great whites can handle cooler water for short periods, but they do not thrive in it. So while an occasional wanderer could appear, a resident population is unlikely.

Are great white sharks aggressive to humans?

Statistics on shark attacks

According to the International Shark Attack File (ISAF) records compiled by Wikipedia, great white sharks account for the highest number of unprovoked attacks on humans of any shark species—over 300 documented incidents globally. But fatalities are relatively rare: about one in four attacks is fatal, often due to blood loss rather than consumption.

Comparison to other sharks

Bull sharks and tiger sharks are also considered highly dangerous, but great whites lead in both total attacks and fatalities. The table below puts them in context.

Reasons for attacks

Experts at White Shark Divers point out that most attacks are cases of mistaken identity: a surfer or swimmer resembles a seal from below. Humans are not part of the great white’s natural diet, which consists mainly of seals, sea lions, and fish.

What is the only predator of the great white shark?

Orcas as apex predators

Orcas (Orcinus orca) are the only known natural predator of adult great white sharks. White Shark Divers notes that orcas have been observed killing and eating great whites off the coast of South Africa. These encounters usually involve an orca flipping the shark upside down to induce tonic immobility, then consuming the nutrient-rich liver.

Evidence of orca attacks on great whites

Juvenile great whites may also be preyed upon by larger sharks, but only orcas regularly target full-grown adults. Documented cases from South Africa and New Zealand show that when orcas enter an area, great whites flee and sometimes abandon feeding grounds for months, according to 2SeeWhales.

The size disparity is stark: adult orcas can reach 8 m and 10,000 kg—over five times the weight of a typical great white. That size advantage, combined with coordinated hunting, makes orcas the undisputed apex in this matchup.

Four dimensions, one pattern: orca dominates in size, speed, strength, and social hunting.

What smell do sharks hate?

Myths about shark repellents

The idea that a certain smell repels sharks is persistent but poorly supported by science. Claims that great whites hate the smell of dead shark or eucalyptus have circulated for decades, yet no compound has been proven effective in controlled trials. 2SeeWhales notes that while some natural substances (e.g., extracts from the Pardachirus marmoratus fish) temporarily deter sharks, they are not reliable repellents.

Scientific studies on shark olfaction

Sharks have an extraordinary sense of smell—they can detect one part of blood per million parts of water. But that sensitivity also makes them curious about unfamiliar odors. Research from the University of South Florida (via White Shark Divers) found that while some smells trigger avoidance, the effect is short-lived and inconsistent across individuals. No smell functions as a universal “off switch.”

Which shark is most likely to eat you?

Great white shark attack statistics

The great white shark holds the top spot for fatal attacks on humans. According to 2SeeWhales, it has been responsible for at least 57 confirmed fatalities globally. However, the overall risk is minuscule: you are more likely to be struck by lightning than attacked by a shark.

Bull sharks and tiger sharks also dangerous

Bull sharks and tiger sharks round out the “big three.” Bull sharks are particularly concerning because they can swim in freshwater and often come into contact with humans in rivers and lakes. Tiger sharks have a reputation for eating almost anything, which increases the chance of a bite. Together, these three species account for the vast majority of fatal attacks, as documented by White Shark Divers.

Global attack data

The International Shark Attack File (ISAF) reports that in 2023 there were 69 unprovoked bites worldwide, of which 10 were fatal. Great whites were involved in the highest number of incidents. Yet the trend is clear: attacks are not increasing in proportion to human beach activity.

Clarity

Quotes from experts

“Great white sharks are not the indiscriminate killers that popular culture makes them out to be. Their attacks on humans are almost always investigative bites, not feeding attempts.”

— NOAA Fisheries biologist (paraphrased from agency educational materials)

“The conservation status of the great white shark remains vulnerable. Protecting them is not just about saving a species—it’s about maintaining the balance of the entire marine ecosystem.”

— Oceana Canada (policy brief on shark conservation)

The scientific consensus is clear: great whites are vital to ocean health. Removing them from the food chain leads to cascading effects, including overpopulation of seals and disruption of fish stocks.

“No smell has been reliably proven to repel great white sharks. The most effective deterrents are physical—like electrical shark shields—not aromatic.”

— Marine biologist Dr. Christopher Lowe, California State University Long Beach (as cited in National Geographic)

For policymakers and ocean enthusiasts alike, the choice is clear: prioritize evidence-based management over fear-driven culling. The great white shark is not a monster—it’s a key predator that deserves our respect and protection.

For a deeper dive into the species’ behavior and habitat, check out this comprehensive guide on great white shark facts.

Frequently asked questions