danger swim flew life belt life-saver life-saving lifebelt rescue ring watch safe saftey salvation saving coast sea secure security water artificial conservation conserving drainage drought-protection lined liner liners park pipes piping pond public ripples rippling storage storing treatment water-saving blades chain circular controlled directional fan farm farming equipment old outback pump sepia silhouette tail blade water pump wind powered windmill abstract beauty blue calm coastal concept cool creation damp design ecology fantasy graphic harmony holiday horizon illustration light magical moisturiser nature ocean peace pink pool pretty rainwater reflection render rest ripple river seasons spa spring summer tide water saving waterway wet lensflare deep glassy moisture vector white winter dez pain xymonau dome otherworld pipe shiny tiles tube advice alert announcement assistance be-careful beware black buoyancy care caution circle communicating communication danger flotation-device information informing kisby-ring lettering life-preserver life-saving-buoy lifebuoy lifering lifesaver message no-lifeguard perry-buoy personal-protective-equipment red rescue-aid rescue-device ring-buoy risk risks risky safety safety-device sign signage swim swimming swimming-pool warning warning-sign