Many people are afraid to swim in the sea with jellyfish, whose touch can be harmful. There is one activity in Borneo, which can help you cope with that fear.
On the island of Kakaban near the coast of East Kalimantan, a unique lake welcomes swimmers from around the world. Four species of stingless jelly fish inhabit this clean water basin, and they attract much more attention than small reef sharks and other fish. Thousands of jellyfish swim around people with no fear—they bounce from your legs, slide along your back, and you can easily play with them in your palms. Those who have experienced this activity say that the first unpleasant feeling turned into excitement very fast.
Visit Kakaban lake during the dry season between March and October, as the path there gets slippery and dangerous during rain. Moreover, the visibility is rather crucial for diving activities, and it's higher during the dry season.