Swimming with sharks: Great whites and humans get closer than ever

Key Concepts

• Great White Shark Population Increase: Rising numbers of great white sharks off the Southern California coast.
• Human-Shark Encounters: Increasing frequency of interactions between humans and great white sharks.
• Shark Behavior & Perception: Sharks are becoming habituated to humans and generally do not view them as prey.
• Conservation & Environmental Factors: Warming waters and conservation efforts contributing to the population growth.
• Public Perception vs. Reality: Challenging the sensationalized portrayal of sharks in media (e.g., Jaws, Shark Week).

Increasing Great White Shark Presence Off Southern California

The Southern California coastline is experiencing a notable increase in the population of great white sharks, leading to more frequent encounters with humans. Photographer Carlos Gana, known as the “Malibu artist” on YouTube, has been documenting these interactions using drone footage since 2018. His videos routinely capture sharks, ranging in size from 12-13 feet to a massive 20 feet, swimming close to shore, even near popular locations like the Santa Monica Pier. Gana notes that spotting a shark within five minutes of launching his drone is a common occurrence.

Encounter Frequency & Attack Rates

Despite the increased presence, actual shark attacks remain relatively rare. The footage collected by Gana demonstrates that the vast majority of encounters do not result in aggression. Statistically, there are approximately three shark bites per year and one fatality every three to four years along the California coast. This suggests a low probability of attack despite the growing shark population. Chris Lo, a shark expert, emphasizes that sharks are becoming accustomed to human presence and recognize that humans are not their typical prey. He states, “99.9% of the time, people will not know that they’ve been near a shark.”

Factors Contributing to Population Growth

The increase in great white shark numbers is attributed to two primary factors: warming ocean waters and successful conservation measures. Warming waters create a more hospitable environment for the sharks, while conservation efforts have protected them from overfishing and other threats. This has allowed the population to rebound over the past two decades. Lo points out, “If you spent any appreciable time in the water off California, I guarantee a white shark swim by you and you did not know it.”

Shifting Public Perception & Risk Management

The documentation of these encounters, particularly through Gana’s videos, is challenging the traditionally fear-based public perception of great white sharks, often fueled by media portrayals like the film Jaws and programs like Shark Week. Lo explains that Gana’s work “is providing the public a different view of what white sharks are like… It’s giving them this idea that the sharks are out there all the time.”

California authorities have adapted their response to shark sightings accordingly. Rather than automatically closing beaches, they now primarily issue warnings to beachgoers, reminding them that they are entering the natural habitat of a large predator. Signage is used to inform the public and encourage responsible behavior. This approach reflects an understanding that sharks generally avoid humans and are not actively seeking to attack.

The Shark Lab & Long-Term Tracking

The Shark Lab has been actively tracking and tagging great white sharks since 1966, providing valuable data on their movements and behavior. This long-term research contributes to a better understanding of the species and informs effective conservation strategies. The lab’s work supports the observation that sharks frequently inhabit coastal waters without posing a significant threat to humans.

Apex Predator & Coexistence

The report underscores the importance of recognizing great white sharks as apex predators and respecting their environment. As Gana states, “we have to play by their rules” when entering the ocean. The overall message is one of coexistence, emphasizing that while sharks are powerful animals capable of inflicting harm, they are generally not interested in attacking humans and are increasingly habituated to our presence.