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Are Basking Sharks Dangerous? Surprising Truth Revealed

Shark Attacks in North Carolina

The thought of swimming with a 30-foot, 16-ton shark with a mouth over 3 feet wide is enough to make anyone shudder. It’s the stuff of nightmares for thalassophobia sufferers and anyone lacking a death wish. But are basking sharks as dangerous as their intimidating size suggests? The answer is no. Despite their colossal dimensions, basking sharks are not a threat to humans. 

These gentle giants are not aggressive predators and have no interest in harming humans. In fact, they are one of the least intimidating species of shark out there. So, while it may be tempting to keep a safe distance, there’s no need to let fear stop you from admiring these awe-inspiring creatures from afar.

Do Basking Sharks Eat Humans? 

Are Basking Sharks Dangerous

No, basking sharks do not consume humans, as humans are not part of their regular diet. Basking sharks have a specialized feeding behaviour and exclusively feed on plankton and other microscopic invertebrates. Despite their large mouths, they lack the ability to consume anything significantly larger.

Basking sharks are categorized as “filter feeders,” meaning their mouths are uniquely adapted to filter plankton and tiny invertebrates from the water. These sharks have a remarkable capacity to filter out hundreds of pounds of plankton on a daily basis.

Unlike many other filter feeders, basking sharks do not actively suck water into their mouths. Instead, they leisurely swim with their massive jaws open, filtering their food as they move through the water. It’s quite a comfortable lifestyle for them. These sharks typically swim at a speed of around two miles per hour (3.2 kph) and can filter over two tons of water during that time.

Do Basking Sharks Bite? 

Contrary to popular belief, basking sharks do not bite despite their ability to close their mouths. Although they possess teeth that measure only a quarter of an inch (5mm), these teeth do not serve any feeding purposes. While it is speculated that these teeth might be used during mating, no documented evidence exists to confirm their exact function.

Basking sharks adopt a feeding method in which they swim with their mouths open, allowing water to pass through their gills. Within the shark’s gills, tiny organisms are trapped by specialized structures called gill rakers, which are comb-like cartilaginous formations. The trapped microscopic animals are eventually swallowed.

Since basking sharks rely on luck rather than active hunting to obtain prey, they do not require rapid mouth movements or powerful jaw muscles.

Do Basking Sharks Attack Humans? 

There has never been a documented case of intentional human attacks by basking sharks. The only recorded incident involving harm to humans caused by a basking shark was an unfortunate and uncommon event. In 1937, off the coast of the UK, a basking shark accidentally overturned a small fishing boat when it leapt out of the water, resulting in the tragic drowning of the three individuals on board.

Considering that the teeth of a basking shark are less than a quarter of an inch long, it is challenging to envision the extent of damage it could inflict if it were to intentionally attack a human. Theoretically, it could swallow a human, but there have been no documented cases of such incidents occurring. This is primarily because basking sharks are not true predators and primarily feed on plankton, with humans not being a part of their dietary preferences.

Ironically, humans pose a greater threat to basking sharks than vice versa. These sharks are unfortunately hunted for their alleged use in traditional Chinese medicine and for their fins, which are key ingredient in shark fin soup. Additionally, they frequently get caught unintentionally in fishing nets, and since most sharks need to keep moving to breathe, they often drown before they can be released. These factors have resulted in basking sharks being classified as an endangered species on the IUCN Red List, leading to the implementation of protective laws in certain countries.

Is it Safe to Swim With Basking Sharks? 

Basking sharks are known for their gentle and calm nature, displaying a high level of tolerance towards swimmers and divers. In fact, numerous tour companies worldwide offer opportunities for tourists to swim or dive alongside these magnificent creatures. People who have experienced these encounters often describe basking sharks as either indifferent or politely curious, occasionally circling around swimmers to observe them more closely.

As previously mentioned, basking sharks are not aggressive and do not consider humans as part of their natural food source. In fact, anything larger than a few millimetres does not form a part of their diet either. Therefore, they have no motivation to attack humans for sustenance. Additionally, basking sharks have minimal natural predators in the wild, with the potential exception of orcas, which further contributes to their non-fearful demeanour.

Due to their calm and passive nature, basking sharks can be great companions for swimmers. Engaging in swimming activities with these sharks is generally considered safe. However, it’s important to remember that basking sharks are massive creatures with powerful tails and rough skin covered in small, tooth-like structures called denticles. They also have limited eyesight, which may make them less aware of their surroundings than expected.

While incidents involving basking sharks are exceptionally rare, accidents can occur. It’s crucial to bear in mind that these are wild animals and may not be accustomed to human presence. Therefore, it is advisable to approach them with respect and maintain a reasonable distance, both for their well-being and the safety of the individuals involved.


Do basking sharks ever attack humans?

Basking sharks are undoubtedly one of the most peaceful and unthreatening creatures that can be found in the ocean. Known for their docile nature, these massive sharks are considered harmless unless provoked or mistaken for a prey item. Despite their gigantic size and intimidating appearance, basking sharks have never been known to attack humans intentionally. In fact, they are filter feeders that feed on plankton and other small organisms that pose no harm to humans. 

Why can’t you touch a basking shark?

The basking shark is a magnificent creature that can grow up to a staggering 40 feet in length. Despite their massive size, it’s important to remember that they are still wild animals and should not be touched. In fact, it’s illegal in many countries to intentionally touch or harass these gentle giants. But why is that? The answer lies in their delicate skin. Basking sharks, unlike other shark species, have very thin skin that tears easily. Touching them can cause serious injury and even lead to infection. 

Are basking sharks aggressive?

One of the most interesting sharks in the ocean is the basking shark. These creatures are also known as the gentle giants of the sea, as they feed on tiny plankton and rarely show any aggressive behaviour towards humans. While their large size may make some people nervous, basking sharks pose no real threat to humans. In fact, these docile creatures are often more interested in basking in the sun near the surface of the water, hence their name.

Final Words

Basking sharks are not the first species that come to mind when thinking about sharks. They are often overlooked due to their harmless nature towards humans. These gentle giants prefer to bask in the sun and eat lazily rather than hunt humans. In fact, encounters between basking sharks and humans almost always end positively for both parties. 

However, the danger we pose to basking sharks is immeasurable when compared to the tiny threat they could potentially pose to humans. It’s unfortunate that we have continued to hurt and harm these non-aggressive sharks for centuries. It’s time to appreciate their existence and let them thrive peacefully.


Author Profile
Rahul M Suresh

Visiting the Zoo can be an exciting and educational experience for all involved. As a guide, I have the privilege of helping students and visitors alike to appreciate these animals in their natural habitat as well as introducing them to the various aspects of zoo life. I provide detailed information about the individual animals and their habitats, giving visitors an opportunity to understand each one more fully and appreciate them in a more intimate way.

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Visiting the Zoo can be an exciting and educational experience for all involved. As a guide, I have the privilege of helping students and visitors alike to appreciate these animals in their natural habitat as well as introducing them to the various aspects of zoo life. I provide detailed information about the individual animals and their habitats, giving visitors an opportunity to understand each one more fully and appreciate them in a more intimate way.


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