Phuket is Thailand's largest and most popular island. While generally safe regarding violent crime, the primary cause of tourist injuries and fatalities is motorbike accidents; only rent a scooter if you are an experienced rider, always wear a helmet, and be aware that local driving habits are erratic. At the beach, be highly cautious of the infamous 'jet ski scam' where operators extort money for pre-existing damage. During the monsoon season (May to October), the ocean becomes highly dangerous with deadly rip currents; always obey red warning flags on the beach, as drownings are unfortunately common.