Beach signs prohibiting swimming and warning of strong currents at the beach on the north shore of Oahu, Hawaii, USA, North America

america american australasia beach sign hawai'i hawaii no no people north america o'ahu oahu oahu island oceania polynesia polynesian sign trip us america us american usa united states united states of america vocal accident alert alertness attention attentive attentiveness ban banner beach beachfront breaker casualty caution coast danger dangerous deep deserted empty endangerment flag float forbidden guy hazard high holiday holiday time hurt icon information information sign injured injury isolated journey law male man misfortune no one nobody north coast north shore ocean prohibited prohibition protection protective red red coloured regularisation regularization rip risk rule safety sand sandy save sea spray secure security shelter shore signpost sing surf surge swim symbol tall tear tourism travel travel photography uninhabited vacation vacation time venture voyage warn watchful water waterfront wave wave crashing wounded yellow