beach dangers hut lifeguard lifeguard-towers lifeguards look-out lookout lookout-tower observation observe ocean prevent-drownings prevention protect protection safety scan scanning seashore shark-spotting shelter structure structures supervise supervision swimmers swimming tower volunteers watch landscape lifeguard tower palms summer fog harbour mist Morning Nyberg reflection sea stribes water autumn baywatch coast fall spray storm sunrise waves winter guard HDR life public sand shore showers bay coastline safe board boardwalk dawn mole pier security sun sunraise ALS architecture Australian-Lifeguard-Service beaches coastal emergency-service holidays outdoor popular raised recreational-beaches rescue seaside sights surfers swimmer-rescue tourism tourist tourists traditional travelling travels water-rescue water-sport-participants