Surf life savers warn of another deadly summer after two drown on Christmas Day

With reports of surf life saving rescues up in some states, there are fears of a repeat of last summer, when 145 people drowned

Australians are being urged to be safe in the water this week, as the country enters the most dangerous time of the year for fatal drownings.

Two swimmers drowned on Christmas Day - a 36-year-old man in Sydney and a 19-year-old in Lorne in Victoria - and police divers in Western Australia are searching Black Diamond Lake near Collie in the state's south-west after a 30-year-old man did not return from a swim.