Police are appealing for sightings of a missing Tasman man.

John Fraser McDonald was last seen at home in Takaka about 6pm yesterday.

His family and police have concerns for the 36-year-old's wellbeing.

A search and rescue operation is currently underway in Golden Bay.

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Anyone who has seen McDonald, or has information they think may help find him, is asked to please phone police on 111 immediately.