Northland Police are appealing to the public to step forward if they recognise or know the owners of a dinghy found floating out at sea.
Posting to Facebook, police said the small dinghy was found about 500m out from Flat Island in the Cavallis, northeast of Kaeo.
They are also asking anyone who knows someone who is overdue returning from a snorkelling trip in the area to immediately call 111.
The dinghy is painted white and has a painted red stripe around the edges. Diving equipment was found inside it.