adults afternoon bathers bathing bathing-costumes bathing-suits beach beach-towels bikinis children clothes clothing cool cooling currents enjoyment families family friends fun hot men ocean outdoors outing outside people public relaxation relaxing safety safety-flags sand summer sun sunbathing sunlight sunshine suntan surf swimmers swimming tourists towels warm water waves wet women alive animal aquarium aquatic arms biology brown bumps coast coastal coastline conservation coral creature echinoderms endoskeletons environment environmental fish five five-arms life marine nature outer-shell pitted pool rock rockpool rough save sea sea-creatures seashore seastar shapes star starfish surface textures tide tidepool tube-feet underwater wild wildlife builders' rubble color colored colors colour coloured colours dumped growing growth layers levels low tide mangroves natural outcrop pebbles plants pollution receding tide rock formations rocks rocky rubble seaside shade shadows shore shoreline Sizes stones stony tidal tides variety waste waterline distance distant expanse light open area recreation strolling sunset waders wading walking