How do sharks grow so fast?

Sharks grow rapidly due to their unique evolutionary adaptations, including a high metabolic rate and efficient feeding strategies. Their diet, which often includes high-protein prey like fish and marine mammals, provides the necessary nutrients for fast growth. Additionally, sharks possess a cartilaginous skeleton that allows for quicker growth compared to bony fish. Environmental factors, such as water temperature and availability of food, also play a significant role in their growth rates.