Based on the southern side of the Ihavandhippolhu Atoll, Gallandhoo is a 12-hectare rock-based island that has unique natural and environmental characteristics. It is home to a wide variety of species. The natural diversity of this island is most visible through the greenery of the trees, complemented by the island's rich soil fertility. A great number of Lettuce Trees (Lhos Gas) are found on this island. The mangroves and wetlands on the island also show the island's rich biodoversity and its environmental significance. In addition to this, different types of birds nest on the island during the Northeast Monsoon (Iruvai Moosun). The island's reef biodiversity is vibrant, and the island is known for being a nesting ground for turtles.