Why do sharks weigh so much?

Sharks weigh a lot primarily due to their large size and unique anatomical features, such as their dense, cartilaginous skeletons, which provide strength and buoyancy. Additionally, their bodies are adapted for efficient swimming, with powerful muscles and a high-fat content in their livers that aids in buoyancy control. Their size also allows them to be effective predators, enabling them to hunt larger prey in various marine environments. Furthermore, many species of sharks can grow quite large, contributing to their overall weight.