A coconut shell is the hard, protective outer layer of a coconut fruit, located between the husk and the inner edible flesh. It is tough, fibrous, and brown in color, providing structural support and safeguarding the coconut's water and meat. Coconut shells are widely used in various applications due to their strength and durability. They can be carved into utensils, bowls, or decorative items, and are also utilized in making charcoal, biofuel, and activated carbon, which is used for filtration and purification purposes. In gardening, coconut shells are often turned into eco-friendly planters. Being biodegradable and abundant, they offer an environmentally friendly resource for multiple industries.