Air crash investigators have arrived on the Victorian coast, where four people are believed to have died after a small plane crashed into the ocean.

While the bodies of two men and a woman were retrieved from water just off Barwon Heads, near Geelong, on Friday, search and rescue crews will continue looking for a fourth person on Saturday.

A fisherman witnessed the plane, which took off from Moorabbin Airport, crash into the water about 12.30pm on Friday.

Police, SES crews and local surf club members scoured the shore and water for debris most of Friday afternoon, bringing in boatloads of plane wreckage to help solve the cause of the crash.


The body of the plane, which is submerged about 30m below the water, will also be brought to land on Saturday.