Koh Samui is a high-end tourist island in the Gulf of Thailand and is generally very safe. Violent crime against tourists is rare, though petty theft from unsecured hotel rooms or left unattended on the beach does occasionally occur. The island's ring road is notorious for serious motorbike accidents; sand on the road, stray dogs, and inexperienced tourists make driving hazardous. Environmentally, the Gulf of Thailand occasionally sees highly venomous box jellyfish, particularly between July and October; pay close attention to warning signs on the beach, carry vinegar in your beach bag, and consider swimming in hotel pools during this time.