When you do water sports, avoid contact with these sea creatures because of their stinging tentacles. Dousing in vinegar will deactivate any stingers which have not “fired”. Calamin lotion, antihistamines and analgesics may reduce the reaction and relieve the pain.
Most of Sumatra is part of a geologically unstable and volcanically active island arc. Sumatra is often associated with intense volcanic and seismic activity. On December 26th 2004, a large tsunami generated by a massive earthquake (magnitude 9.4 the world’s second-largest recorded earthquake) off the west coast of Sumatra caused widespread death and destruction in coastal areas bordering the Indian Ocean. It was among the deadliest natural disasters in human history with over 170,000 people killed in Sumatra.
If you are going to spend the night at the summit of mountain. take a stove so you don’t need to deplete the limited supply of firewood. Depending on open fires for cooking can cause rapid deforestation. If you must light a fire, use an existing fireplace. Use only minimal, dead, fallen wood. Make sure that you totally extinguish a fire after use. Don't forget to carry all trash out with you and make sure others in your party do the same. Let's support "Responsible Tourism"!!!!
Stay away from Western food, particularly salads, in areas with few foreigners. Most Indonesian food is bought, cooked and served on the day, while Western ingredients may sit around for a week or more.
Chloroquine-resistant malaria still exists on Siberut island – West Sumatra province, so take appropriate precautions when you are having a surfing safari or jungle treks.
Chloroquine-resistant malaria has been reported on Nias – Northern Sumatra, so be sure to take appropriate precautions.