The Sunda Strait is the strait between the Indonesian islands of Java and Sumatra. It
connects the Java Sea to the Indian Ocean.
It is about 30 km wide at its narrowest point, which is at the north end, but this is
a short section, about 30 km long, and then it opens out to about 100 km for another 100 km. There are a number of small islands
in the strait; the volcano Krakatoa is located on one of them.