Another couple of annoying pests are jellyfish larvae and sea lice. The larvae are so tiny you can barely see them, but believe me, you can feel them when they sting. The stings are minor really, but it's the itchy red bumps that develop later on that evening and itch like hell that are the real problem. Sea lice will attach themselves to arm or leg hair and then give you a good bite that stings real good. The best way to avoid these pests is to wear a long sleeve rash guard.
Jelly fish can be a problem sometimes too.
Again, long sleeve rash guards work well. Coral Reefs Indonesia is basically just a large chain of islands and we all know that islands are surrounded by sharp coral reefs. If you hit the bottom here you are going to get some nasty reef scrapes and cuts. The real bummer is that cuts are hard to heal in Indo because of the warm and humid climate. A good first aid kit is an essential requirement for those planning to travel and surf in Indo.