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Shark Attacks: Causes and Impacts

Shark attacks in Recife began to increase significantly during the 1990s.

Why did the attacks start happening?

The main factors identified are:

The construction of the Port of Suape altered mangroves, estuaries, and areas used by sharks for feeding and reproduction.

Ocean currents and the underwater geography of the region began to favor the movement of sharks closer to the shoreline.

There is a deep-water channel near the beaches of Boa Viagem and Piedade, allowing large sharks to approach very close to swimmers.

The increase in the number of surfers and beachgoers raised the likelihood of encounters between people and sharks.

Which species are responsible for the attacks?

The vast majority of incidents are attributed to two species:

Bull Shark

Responsible for most attacks in the region.

Can live in both saltwater and freshwater rivers and estuaries.

Often frequents shallow coastal areas.

Tiger Shark

Less common than the bull shark but also involved in several attacks.

One of the ocean's largest predators and possesses an extremely powerful bite.

Why are some attacks fatal?

Attacks can be fatal because:

These species are large and very powerful.

Bites often strike the legs or arms, severing major arteries.

Victims can lose a significant amount of blood within minutes.

Even when a shark is not attempting to feed on a person, a single bite can cause devastating injuries.

Why do the attacks continue to occur?

Because the factors that favor encounters still exist:

The coastal environment remains altered.

Sharks continue to use the region as a migration and movement corridor.

Many people enter areas marked as dangerous.

During rainy periods, the water becomes murky, increasing the likelihood of sharks confusing humans with their natural prey.

High tide and locations without the protection of the reefs increase the risk.

Did you know?

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