Why does a shark have gills?

Introduction: Understanding the Anatomy of Sharks

Sharks are one of the oldest and most fascinating creatures on the planet. They belong to the class Chondrichthyes, which means that their skeletons are made up of cartilage rather than bone. Sharks are known for their sharp teeth, powerful jaws, and streamlined bodies that allow them to move through water with ease. However, one of the most important features of a shark’s anatomy is its gills.

The Importance of Gills to a Shark’s Survival

Gills are a vital component of a shark’s respiratory system. Unlike mammals, which breathe air through their lungs, sharks extract oxygen from water through their gills. This allows them to stay underwater for extended periods of time without having to surface for air. Without gills, sharks would not be able to survive in their aquatic environment. Gills also help regulate the concentration of salt and other chemicals in a shark’s body, which is essential for maintaining their internal balance.