Baa Atoll surface. The atoll is formed by 105 coral reefs, representing a reef surface of 263 km. These reef surface in 61 islands provided with vegetation, and a variable number of sandy cays (between 4 and 14). Half (38) of these islands are less than 10 hectares, constituting less than 20% of the atoll lands. The biggest island is Dharavandhoo (45,5 ha), followed by Kunfunadhoo (35 ha). The highest point, difficult to establish, can be situated in Funadhoo, with 3,19 m over the sea level. Maalhosmadulu Atoll is also considered as a good example of the rich biodiversity found in the
Gnaviyani Atoll a whole. NOTE: "Haa Alifu, Haa Dhaalu, Shaviyani, Noonu, Raa, Baa, Kaafu, etc.. (including Gnaviyani) are code letters assigned to the present administrative divisions of the Maldives. They are not the proper names of the natural atolls that make up these divisions. Some atolls are divided into two administrative divisions or contain half of an atoll (In case of Thiladhunmathi to Haa Alif, Haa Dhaal, Shaviyani and Noonu Atolls, Huvadhu Atoll to Gaafu Alifu and Gaafu Dhaalu Atolls and In case of half of Ari Atoll to Alifu Dhaalu Atoll), while other divisions are made up of two or more