Over a hundred thousand giant cuttlefish, the largest cuttlefish species in the world, gather together. The larger males can reach one metre in length and 10kg in weight. At the beginning of the ...

The tiny cephalopod can change its color and shape to resemble its surroundings, but divers should beware: it’s the only ...

In the late 1990s, more than 180,000 giant cuttlefish gathered to breed in South Australian waters. Since then, their numbers have dwindled by 93 per cent and no-one is sure why ...