beach hazard
- riptideDangerous outward current
- undertowSubsurface seaward current
- jellyfishDrifting marine stinger
- sharksLarge predatory fish
- sunburnUV-induced skin inflammation
drowning · waves · current · lifeguard · warning · flags · stinger · rocks · surf · tide · seaweed · cramp · lightning · debris · swell · rip · shallow · deep