* Mistaken identity: Sharks often mistake humans for their natural prey, such as seals or sea lions. This is especially true in murky water, where sharks may not be able to see clearly.
* Food conditioning: Sharks can be conditioned to associate humans with food. This can happen when people feed sharks, either intentionally or unintentionally, such as by throwing food scraps overboard from a boat.
* Territorial behavior: Sharks may attack if they feel threatened or if they perceive someone as a threat to their territory. This is most likely to happen in areas where sharks are known to live or feed.
* Provocation: Sharks may attack if they are provoked, such as if someone tries to touch or ride them.
* Injury or illness: Sharks that are injured or ill may be more likely to attack, as they may be more aggressive or desperate for food.
It is important to remember that shark attacks are relatively rare. However, it is still important to be aware of the risks and to take precautions when swimming in areas where sharks are known to live.