Swimmers and dog owners have been warned off entering the water near Kurnell Peninsular, south of Sydney, after a dog was eaten by a shark.
The dog was swimming in shallow waters off shore when a shark attacked the dog at Bonna Point, near the headland of Botany Bay on Sunday.
The shark - believed to be a bull shark - has sparked authorities into action with lifeguards warning people to avoid the water.
The Sutherland Shire Council released a statement telling beachgoers to stay away from the water when it is dark or during twilight.
"Council lifeguards are at the Kurnell beaches advising swimmers and pet owners to keep out of the water and they have installed signs to alert the public to the shark sighting," the statement read.
