Steve Irwin released salty crocs into the ocean from Darwin and they have bred. 30 years ago it was rare to see a croc at the beach here.
I believe you are mistaken.. and I'm not sure why you felt the need to tell me that.
Sharks have always loved the Aussie coastline. For what it’s worth I never swim in beaches with nets and a shark has never taken me. It’s when you swim. Avoid sunrise and sunset. That’s their breakfast and dinner time.
I hate that mentality. Animal lovers (usually white women) thinking they know exactly how to control beasts/monsters, how to avoid being attacked, thinking they're safe... "pitbulls are misunderstood.. they're so sweet and beautiful"...

and then they get fucking mauled. Just like those "WELCOME IMMIGRANTS" fuckwits. Just look what happened to Steve Irwin. King of Kings animal/monster handler and was still killed by one. Then there's the Siegfried & Roy tiger attack, the orca attack(s) at SeaWorld... all on super-experienced handlers.
Monsters gon' monster/attack whenever the fuck they feel like it.
You mentioned avoid sunrise and sunset as it's their breakfast and dinner time.
Well how about lunch (or a snack...)?
You know what time this shark attack happened?
Around 3:30pm. Hours before sunset (it's summer in Aus, Americans).
No hard feelings. I still want you. PM me.