This little-known seabird was first scientifically described in 2001 based on six specimens taken in 1927 off Merelava, Vanuatu, and a single bird found ashore in 1983 in New South Wales, Australia.

This species resembles the white-necked petrel, but is slightly smaller at 40 centimetres (16 in) in length and 300–350 grams (11–12 oz) in weight.

It has a black cap, white rear neck, dark grey back, wings and tail, and a darker rump.

This is a solitary pelagic species of the open seas of the south-west Pacific.

It has an effortless graceful flight with few wing beats, and does not follow ships.