Dad killed in ‘large shark’ attack at Sydney beach The AustralianExperienced surfer and dad dies in shark attack on Sydney’s Northern Beaches Australian Broadcasting Corporation‘Don’t bite me’: Surfer Mercury Psillakis killed in shark attack on Sydney’s northern beaches The Sydney Morning HeraldEvening News Bulletin 6 September 2025 SBS Australia‘Every surfer feeling this’: tight-knit community mourns fatal shark attack on Sydney’s northern beaches The Guardian