White sharks may have a guaranteed spot on Shark Week but there is still a lot to learn about this famed fish.
Sharks have been around for millions of years. The earliest fossil of Carcharodons, the of the white shark, dates back to . Yet today, white shark populations are considered to becoming endangered due to .
It isn't just modern populations of sharks that can provide us with useful insight. Understanding how white sharks thrived millions of years ago could help us protect them today.
The researchers collected white shark from three different places. They used measurements of the teeth to estimate the total length of the individual sharks. The total length of a juvenile white shark was considered to be between 175 cm to 300 cm. In Coquimbo, there was a higher proportion of juveniles compared to the other study sites. The researchers also found signs of potential prey species and evidence that this area was once a shallow-water marine habitat.
Nursery habitats helped protect young sharks millions of years ago. Identify and conserving modern nursery habitats could be an important factor in keeping white shark populations stable today.