Police have described Mercury Psillakis's death on Father’s Day weekend as “particularly tragic”. Photo / NewsWirePolice have described Mercury Psillakis’s death on Father’s Day weekend as “particularly tragic”. Photo / NewsWire

Plenty of beachgoers were at Dee Why when the tragedy occurred. Photo / NewsWirePlenty of beachgoers were at Dee Why when the tragedy occurred. Photo / NewsWire

First responders were called to the scene at Long Reef Beach after 10am on Saturday. Photo / SurflineFirst responders were called to the scene at Long Reef Beach after 10am on Saturday. Photo / Surfline

‘Doesn’t look good’: Harrowing scenes

The fatal shark attack has closed beaches between Manly and Narrabeen. Photo / NewsWireThe fatal shark attack has closed beaches between Manly and Narrabeen. Photo / NewsWire

First attack in years

Trial to remove shark nets

Northern Beaches Mayor Sue Heins. Photo / Getty ImagesNorthern Beaches Mayor Sue Heins. Photo / Getty Images