Why do whale sharks have ridges on their sides?

Answer 1

Whale sharks have ridges, known as "lateral ridges," on their sides that help streamline their bodies and improve hydrodynamics as they swim through the water. These ridges reduce turbulence and drag, allowing them to move more efficiently while feeding on plankton. Additionally, the ridges may help with stability and maneuverability, aiding in their ability to navigate through various marine environments.