A second suspected shark sighting inside a netted swimming in as many days has forced the baths at a popular beach on Sydney’s Lower North Shore to remain closed.

In an update this afternoon, Mosman Council has said the baths at Balmoral Beach remain closed after it was confirmed “an animal” was spotted in the netted zone of the beach this morning.

“To support the animal leaving the enclosure naturally, the net has been lifted in parts. This approach is consistent with expert advice and allows the creature the opportunity to exit the Baths of its own accord,” the council said in a statement.

The council said professional divers will re-examine the area tomorrow, inspecting the net surrounding area, as well as inside the enclosure, to ensure the animal has safely left.

“If the animal has left, the nets will be reinstated, and council will reopen the baths once the enclosure is secured,” it said.

“If the animal remains inside the enclosure, council will seek specialist assistance to safely encourage the animal to leave,” the council said.

Two sharks were reportedly spotted swimming in the netted zone.© Nine

The beach has been shut as a precaution.© Nine

“Nets in the area were inspected in the past month as part of routine maintenance,” a Mosman council spokesperson said yesterday.