A large seal is on the loose in suburban Newstead near Launceston, Tasmania.

Tasmania police and parks and wildlife officials are working to ensnare the animal which was sleeping on a parked car in the Newstead area, Skynews reports.

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Residents are warned not to approach the seal.

Tasmania police Sgt. Renee Stewart said the seal was "chilling out" resting on a car Sunday morning. When it awoke, it climbed over the vehicle, causing considerable damage before finding another place to take a nap.