How can the soft bodies of coleoid cephalopods so aptly hide in their environment? Why must they? What cells and specialized organs make such crypsis possible for one of the older evolutionary ...

Drawing on over 300 scientific studies, we have evaluated the evidence of sentience in two groups of invertebrate animals: the cephalopod molluscs or, for short, cephalopods (including octopods, squid ...

Compared with the arms of an octopus, our own bony limbs are about as flexible as old tree branches. It stands to reason that ...

How will we ever know? Photographed at Florida Keys Marine Life Just as humans are mammals, octopuses are cephalopods. The word is Greek for “head-foot” and refers to their weird anatomy ...

But the prevalence of the pentadactyl limb argues just the opposite: That for whatever prehistoric reasons, an ancestral tetrapod had five digits per limb, and all of its descendants did as well.

Background Limb asymmetries have been identified as a significant predictor of injury risk. However, the natural boundaries of variation in a non-injured population using clinically relevant and ...

Mating happens at arm’s length for the four species of these cephalopods. The tiny male detaches its hectocotylus—a modified arm that holds its sperm—and gives it to the female, who keeps it ...

Ammonites were shelled cephalopods that died out about 66 million years ago. Fossils of them are found all around the world, sometimes in very large concentrations. The often tightly wound shells of ...

A 12-year-old boy died on Monday after a tree limb fell on him while he was playing in his backyard with a friend in Lawrence Township, New Jersey, police said. It happened at around 12 p.m. on ...

The fossil, found by Jay Anderson in a Steele County gravel pit, was identified as belonging to the genus Endoceras, from the Paleozoic Era. Michael Kjelland (left), a professor from Mayville ...

The Dumbo octopus is an elusive cephalopod that gets its name from its large ear-like fins, which resemble those of the lovable Disney elephant. But there's still lots we don't know about these ...