A spate of shark sightings along the coast of Lake Macquarie has prompted the closure of ones of its beaches.
Blacksmiths Beach was closed for an hour yesterday after a 3 metre bull shark was sighted near the beach by a Department of Primary Industries helicopter.
An alarm was sounded before lifeguards conducted a jet ski search, put out signs and cleared swimmers from the water.
The shark moved away from the beach, which reopened around 10:40am.
At least one shark has been sighted between Redhead Beach and Blacksmiths Point every day for the last 10 days.
Two sharks were seen off Blacksmiths Beach on Tuesday.
Redhead Beach was closed on Tuesday, Friday and Saturday following great white shark sightings.
