Waikiki beach was a little murkier than usual this week because of work happening on the shoreline.
But don't be alarmed.
The murky water offshore of the Duke Kahanamoku was caused by natural clay and dirt sediment. It is not harmful to human health and does not pose a great environmental risk, according to a University of Hawaii coastal geologist.
The city reportedly relocated concrete debris along that eroded shoreline last week. This week's king tides brought water levels higher up the beach, washing the sediment into the water.
Nathan Serota, public information officer for the city Department of Parks and Recreation, said the work was fully permitted and done in "careful consideration ... with the experts who know about these kinds of things. Safety is our no. 1 priority."