Megalodon: The broad diet of the megatooth shark
Peer-Reviewed Publication
In celebration of #SharkWeek, we’re exploring the incredible world of sharks. From their vital role in marine ecosystems to the myths that surround them, join us as we explore all things shark in celebration of #SharkWeek!
Updates every hour. Last Updated: 2-Nov-2025 01:11 ET (2-Nov-2025 06:11 GMT/UTC)
Using synchrotron X-ray nanotomography with detailed 3D imaging and in-situ mechanical testing, researchers are peering inside shark skeletons at the nanoscale, revealing a microscopic “sharkitecture” that helps these ancient apex predators withstand extreme physical demands of constant motion. After hundreds of millions of years of evolution, scientists can now finally see how shark cartilage works at the nanoscale – and learn from them.
Sharks in the Tethys Ocean diversified following the end-Cretaceous mass extinction event, while ray-finned fishes declined, according to a study.