Warning signs posted today at Waimea Bay after city Ocean Safety & Lifeguard Services personnel saw four sharks will remain up until tomorrow morning.

Department of Emergency Services spokesman Bryan Cheplic said the sharks spotted in the bay between 8:30 and 9 a.m. were between 6 and 7 feet long. The sharks were feeding on schools of opelu (mackerel scad) and halalu (juvenile akule or big-eyed scad) in the bay, Cheplic said.

Officials plan to evaluate the situation tomorrow before making a decision on the signs.