The Foreign Office has issued a warning about beach safety, highlighting three flag colours to recognise for tourists to avoid death or serious injury. They advise caution near water’s edge, avoiding unsupervised beach areas and rivers, and being vigilant of rip tides. Three flag colours represent danger (red), caution (yellow), and safety (green) for water activities. Tourists are urged to follow lifeguard instructions and stay informed about water safety while on holiday.