Although it can take hours for the cuttlefish to change its density through its cuttlebone alone, the animal can control its positioning in the water with the aid of its specialized fins and mantle.
Oriol had been observing the cuttlefish for more than an hour and was fascinated by its ability to change colour and shape at will. On one occasion it even disguised its arms as swaying leaves of ...
We all know the sea’s a pretty weird place. We’ve only just developed theories as to why cuttlefish change sex whenever they feel like it. We haven’t even mapped 10% of the world’s oceans ...