SEARCH: The young man was seen jumping into the water at Torpedo Bay.

Police searching for a teenager who jumped off a wharf at Devonport, on Auckland's North Shore have found a body.

The 18-year-old male was seen by a passer-by, jumping into the water at Torpedo Bay at 7.50am on Wednesday.

He had not resurfaced more than 40 minutes later, police said.

A body was found by police divers this afternoon in the water not far from the wharf, a police spokesman said.

The harbourmaster, police maritime unit and police Eagle helicopter were all involved in the search.

Members of the national police dive squad from Wellington arrived at the scene mid-afternoon.

The young man's death will be referred to the coroner.