Situated in the Sunda Strait that separates the large islands of Java and Sumatra, and north east of the Krakatau volcanic Islands, Sangiang Island is a Marine Nature park which offers some of the best underwater marvels found in Banten. Administratively, Sangiang forms part of the Anyer District, Serang Regency, in the province of Banten.
Sangiang offers some of the best diving experiences close to the capital city ofJakarta. . Nearer to shore, where the waves are relatively calmer, the waters around Sangiang Island are perfect for snorkeling. Although the waves will be relatively stronger in several spots, below the surface one can see some of the most amazing underwater spectacles. The sheer sensation of getting up close and personal with the dwellers of the sea floor is truly one of a kind.
Sangiang is known as habitat of soft corals. At a depth of 11th to 15th meters, you can already observe soft corals of various sizes, shape, and color spread over the sea floor. Around the Tanjung Bajo area, you can see schools of yellowtail fish swimming at a depth of about 20th meter. You can also watch large groupers among the colorful coral reefs. For macro photography enthusiasts, there are plenty of nudibranches here with various bright colors that would make interesting objects. There are at least 12 identified diving spots here, which offer equally splendid diving experience.
Sangiang Island was initially designated a natural reserve based on the. Decree of the Forestry Ministry no.112/Kpts-II/1985, covering a total area of 700.35 hectares. Considering its potential and abundant resources, the island and its surroundings area were later converted into a Natural and Marine Tourism Park since 12th October 1993. The park encompasses a total area of 1,420.35 hectares and consists of 700.35 hectares land area and 720 hectares of Marine Park.
Aside from the underwater splendors, the island itself is also home to various rare flora such as cemara laut (casuarina equisetifolia), dadap laut (erithrina variegata), bayur (pterospermum javanicum), ketapang (terminalia catappa), nyampulng (callopphyllum inoplhyum), api-api (avicena sp), wlaikukun (actinophora fragrans), and more. The island is laso the dwelling place of various rare and unique animals such as lutung ape (trchyptus auratus). Crab eating macaques (macaca fascicularis), wild cats (felis bengelensis), kuntul berang (egretta sacra), alap-alap (elanus hypoleucus), python snakes (phyton reticularis), and more.
The island also holds traces of history of World War II battles that left their mark in the ruins of the fort, as well as cannons left by the Japanese forces on the island.