The main component of common cuttlefish ink — melanin — strongly sticks to shark smell sensors, possibly explaining why the predators avoid ink.

The cuttlefish can use its beak to help subdue prey and to defend itself against predators and rivals by biting. Like cuttlebones, beaks differ among species, and their remains enable scientists ...

The smallest of the roughly 120 species of cuttlefish is the 3-inch-long Pfeffer’s flamboyant cuttlefish (Metasepia pfeferi). The tiny cephalopod can change its color and shape to resemble its ...

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 ...