Authorities are warning that a large navigational marker missing off the eastern Bay of Plenty coast is a danger to boats in the area.
The Bay of Plenty Regional Council says the pillar-type marker from an aquaculture farm, about 9km north of Opotiki, broke away at its base.
It is painted black above yellow and displays a white, quick-flashing light.
The council is advising skippers to keep a good lookout and report any sightings to the harbourmaster.