The megalodon – the whopping big shark that became extinct 3 million years ago – likely lost a food fight with the great white shark. Both enjoyed feasting on whales, dolphins and porpoises, but you’ve gotta eat a lot more of ‘em when you’re 18m long and weigh 60 tonnes…

Shark Bay, a World Heritage Site in the Gascoyne region of Western Oz, is home to what scientists think is the biggest plant anywhere in the world. The single 4,500-year-old seagrass covers about 200km2, and it has “completely stumped” researchers who surveyed the area.

Speaking of fabulous flora, South Australia’s Ghost Mushroom Lane near Mount Gambier has been lit up with bioluminescent mushies after some recent rain. And as trippy as heading into a pine forest at night to look at glowing fungus is, it gets funkier with experts telling those interested to “watch the moon cycles” to go on the darkest nights in the coming weeks.