Police and lifeguards yesterday attempted to quell fears that a shark was lurking in the waters off Repulse Bay after a second reported sighting in as many days.
Swimmers were ordered from the water again after a tourist reported seeing a shark inside the protective net at the beach at 4.18pm.
The beach was closed for nearly two hours as marine police and lifeguards searched the waters - but they found no sign of a shark.
'We don't have much information except that someone rang us claiming to have seen a shark,' a police spokeswoman said.
'But they were unable to give us any sort of description of what the shark was supposed to have looked like. Police requested the lifeguard call all the swimmers back to shore. The person in charge has checked the shark nets and they are all fine.'
On Monday afternoon police received a 999 call from a man saying that he had spotted a shark's fin in the water off the beach at Repulse Bay.
A police and marine search proved fruitless.
'He could only report seeing a shark-like object inside the protective nets at the beach,' said a Leisure and Cultural Services Department spokesman.
'We conducted a thorough search but nothing shark-like was spotted. Since no shark has been sighted in the waters off Repulse Bay it was not considered necessary to hoist the warning flags at the beach.'
He said the shark nets at Repulse Bay and 29 other beaches managed by the department were checked regularly by contractors.
The officer in charge of Repulse Bay beach, who refused to give his name, said last night: 'We looked for nearly two hours, keeping a close eye on the water, but there was no sign of any shark.
'Because nobody can confirm there is a shark in these waters we will not be closing this beach.'