A cuttlefish’s W-shaped pupil. | Arnaud Abadie/E+/Getty Images. Squid eyes are highly adapted to see light in the gloomy depths of the ocean, and their vision has almost the same resolution as ...

More than 300 known species of squid display incredible variety in their appearance. The recently documented Ryukyuan pygmy squid (Idiosepius kijimuna) and Hannan’s pygmy squid (Kodama jujutsu ...

There are more than 120 species of cuttlefish. They are found in the order Sepiida and are grouped into six families divided between two suborders. Depending on the species, cuttlefish range in ...

A new study has suggested a species of marine animal may communicate with each other by waving. Researchers from École Normale Supérieure in France have found evidence of cuttlefish possibly ...

Cuttlefish are one of the world's most incredible animals. And in this stunning video, their bizarre hunting techniques are on full, hypnotizing display.

Studying two species, common cuttlefish (Sepia officinalis) and dwarf cuttlefish (Sepia bandensis), the two researchers have identified four arm-waving signs, ...

Cuttlefish brain atlas first of its kind The dwarf cuttlefish, with skin that changes color based on what it sees and feels, could help neuroscientists ask and answer new questions ...

The murky ink from cuttlefish (Sepia officinalis) could help deter sharks from hunting near where people are swimming. After a team at University College Dublin created models of the olfactory ...

Unlike their octopus cousins, a cuttlefish’s 10 tentacles aren’t necessarily equally sized. While the small cephalopod possesses four same-length pairs, its other two appendages extend and ...

Octopus, squid and cuttlefish arms evolved to ‘taste’ different compounds. The different palates may be tied to each species’ hunting style ...