How can convergent evolution explain similarities between megalodon and great white sharks?

Convergent evolution explains the similarities between the megalodon and the great white shark by suggesting that these two species independently developed similar physical traits and structures, despite potentially belonging to different evolutionary lineages.1

While some paleontologists have historically grouped them together based on shared characteristics like serrated teeth, others argue that the megalodon belongs to the extinct megatooth shark family (Otodontidae), while the modern great white shark evolved from a different lineage of lamnid sharks. In this context, convergent evolution posits that because both species occupied similar ecological niches as apex predators, they independently evolved comparable features—such as their serrated, triangular teeth and potentially similar body shapes—to effectively hunt and survive in their environments.12

This process occurs when unrelated or distantly related organisms develop similar traits or behaviors as an adaptation to similar environmental pressures, rather than inheriting those features from a common ancestor. Consequently, the physical resemblance between the two sharks may be a result of this independent evolutionary path toward uniformity in form and function.31