Meet the Mimic Octopus, a brilliant sea creature that can impersonate venomous fish, sea snakes, and more to fool predators ...

Hostile towards other sealife, the lionfish dwells in shallow reefs and is commonly found down to depths of 100 metres. Reaching sizes of up to 1.8 metres, the sight of a sea turtle in its natural ...

The Atlantic is the second largest ocean on the planet ... An invasive alien species has been introduced - the lionfish. The lionfish is a fearsome predator and it's taking over.