Several popular beaches in Sydney's Royal National Park are closed due to increased shark activity after a large whale carcass washes up on a rock platform ... .
Until now, marine apex predators of the Cretaceous period were thought to be mainly large vertebrates such as mosasaurs, sharks and other marine reptiles.
"Great little vacuum. Really handy for cleaning out those hard-to-reach areas in the car, especially. I’ve used it on my stairs too, and it’s been great. Easier than getting the big corded one." ... .
During the Cretaceous, 19-metre-long predatory octopuses swam the seas, and evidence from their fossilised remains suggest they may have been highly intelligent hunters ... .