and parts of the Caribbean. But other countries have different systems.
Caribbean and Mexico: Purple often indicates dangerous marine life (similar to the US). Some resorts use purple for “extreme caution.”
Australia and New Zealand: Red and yellow flags indicate supervised swimming areas (between the flags). Purple is not commonly used. Instead, signs indicate specific hazards (jellyfish, crocodiles, sharks).
Europe: The Blue Flag indicates water quality and environmental standards, not swimming safety. Beach safety flags vary by country.
When in doubt: Ask a lifeguard. Check local signage. Don’t assume the
