Stingless jellyfish
Among the world's rarest.
One of the world's rarest marine experiences, a saltwater lake inside the coral island of Kakaban, cut off from the sea by geological change thousands of years ago, where jellyfish evolved to lose their sting in the absence of predators, so visitors swim among millions of translucent golden jellyfish without danger. Visitors reach it along a short wooden boardwalk climbing over the limestone hills from the jetty, then swim in the calm green water among pulsing jellyfish of different colours. Around the island's outside are deep coral walls famous among divers. A small entry fee is charged, with the boat from Derawan or Maratua separate. Fins are banned in the lake, and visitors are asked to use reef-safe sun cream or none, to protect the jellyfish. Move slowly, do not handle the jellyfish roughly and never lift them out of the water. Trips usually combine Kakaban with Maratua and Sangalaki in one day.
Among the world's rarest.
For thousands of years.
Around the island.
Kakaban island, Derawan archipelago
No: they have all but lost their sting, and some people feel at most a faint tingle. What matters is protecting them by moving slowly.