Great white sharks still couldn't distinguish between humans and seals and sea lions.

The reason why sharks attack humans is still unclear, but the fact that surfers are often attacked is due to a mistake because it has a silhouette similar to that of predatory seals and sea lions when viewed from underwater. There is a theory that 'is'. Research is being conducted to verify how this actually works.

A shark's eye view: testing the'mistaken identity theory' behind shark bites on humans | Journal of The Royal Society Interface

Great white sharks can't see a difference between humans and prey | Live Science
https://www.livescience.com/great-white-shark-mistaken-identity

The study examined how seals such as seals and sea lions, swimming humans, and surfboard humans look from great white sharks in the water.

Great white sharks have no color vision and cannot see underwater objects in detail like humans do. Based on this, the research team processed images of humans and creatures according to the retina of the shark and compared them.

As a result, it was found that both the pinnipeds and humans that swim from the Great White Shark appear to have almost the same movement and shape.

The verification included a long surfboard (2.83m x 0.58m) and a short surfboard (1.77m x 0.5m), and the result was that surfers on long surfboards were not very similar to seals, but in fact 'I don't know how the difference in appearance is reflected in the behavior of the shark,' said lead author Laura Ryan, as there have been reports of sharks biting on long surfboards.

Great white sharks are the only subject of this study, and tiger sharks and bull sharks may look different.

In addition, the number of people who died from being attacked by Great White Shark is 6 in 2020, which is higher than other sharks, but the risk of being attacked by sharks is lower than the risk of other fatal accidents in the first place. is.