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 ...

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 ...

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 ...

This is a 3-D reconstruction of the radula (tongue-like anatomical structure of mollusks for feeding) of a Baculites fossil. Teeth are depicted in yellow and the fragments of the fossil's last ...

Caption Fragment of the habitation chamber of a Baculites fossil (AMNH 55901), mounted on the mictotomography beamline ID19 at the ESRF. The laser symbolizes the position of the X-ray beam which ...

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 ...

Octopuses and fish are routinely seen working together on the ocean floor, and now scientists say that the cephalopods are the leaders of the pack. By Elizabeth Preston Elizabeth Preston wrote ...

It's a well-known fact that octopuses have eight arms. But did you know that each arm contains its own 'mini brain'? Jon Ablett, curator of the Museum's cephalopod collection (including octopuses), ...

Octopuses - and other invertebrate cephalopods - are considered as sentient beings, but EU law covering farm animal welfare is only applied to vertebrates - creatures that have backbones.

Fish did not show aggressive action toward the octopus, according to the paper, suggesting the cephalopod was the dominant individual. The octopus seemed to decide whether or not the group would ...

"They did a nice job of trying to get a quantitative handle on what's going on," said Vecchione, the curator of cephalopods at the National Museum of Natural History in Washington, D.C. Still ...