Java Sea is shallow water with an area of approximately 310,000 km2 of the island of Borneo, Java, Sumatra, and Sulawesi in the Indonesian archipelago.
The sea is relatively young, formed in the last Ice Age (about 12,000 years BC) when the two river systems together.
In the west sea, Karimata Strait connecting it to the South China Sea
In the Java Sea islands and there are several islands: Thousand Islands in the northern district of Tangerang and administratively included in the Jakarta area, Karimun Jawa Islands which entered administration in Central Java, Bawean Island and small islands around it, Masalembo Islands, and the island Kangean and its small islands around it which is under the administration of East Java Province.
Fishing is an important economic activity in the Java Sea.
There are over 3000 species of marine life in this area.
Java Sea, particularly in the western part has reserves of petroleum and natural gas that can be exploited.
The area around the Java Sea is a popular tourism destination.
Scuba diving offers the opportunity to explore and photograph the underwater caves, sunken ships, coral reefs and underwater life.
Several national parks are in this area. Near Jakarta, in the Thousand Islands is the Ujung Kulon National Park.
Karimun Jawa is a national park that consists of twenty-seven islands.
Menjangan Island, near Bali, is a national park "secluded".
In the history of World War II, the site of the ill-fated Java Sea for the Allied forces. In February and March 1942, the Dutch Navy, Britain, Australia, and the United States almost destroyed the Japanese attack.