An unwrapped moist towelette bearing the Malaysia Airlines logo that washed up on a West Australian beach has been examined in the hopes it could provide a clue to the final resting place of MH370.

The packet was sent to Canberra for testing after being discovered on July 2 last year by retired couple Kingsley and Vicki Miller as they walked along the beach at the coastal town of Cervantes.

"We had been saying, 'let's look for stuff from MH370'," Mr Miller said.

They handed the packet in to the police, from whom it passed eventually to the Joint Agency Coordination Centre in Canberra.

Mrs Miller said the Malaysia Airlines logo had been clearly visible on the packet.

A recreation of the moment a moist towelette was discovered on a WA beach, perhaps providing a clue to the fate of MH370. (9NEWS)

However, the JACC has refused to release a photograph of the original find and has withheld comment on the significance of the find.

The centre has only said it is unlikely the towelette will be able to be conclusively linked to MH370.

Experts have said it would be possible for the small package to travel long distances without being damaged.

Oceanographer Professor Charitha Pattiaratchi of the University of Western Australia said debris from the flight could wash up on any beach from Cervantes to Esperance.

MH370 went missing a year ago, with 239 people on board. (9NEWS) (9NEWS)

MH370 disappeared a year ago with 239 people on board.

A search for wreckage is underway in the Indian Ocean, but no sign of the plane or its passengers has yet been found.