Cephalopods such as octopus and squid evolutionarily diverged from mollusks like slugs and snails. These animals have elaborate compact nervous systems located within specialized arm appendages, which can perform a surprisingly ...
Plants & Animals
Apr 13, 2023
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A new study from the University of Santiago de Compostela utilizes the IPBES (Intergovernmental Science-Policy Platform of Biodiversity and Ecosystem Services) to identify how international policy can increase the sustainability ...
Ecology
Feb 20, 2023
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Cephalopods—which include octopus, squid, and their cuttlefish cousins—are capable of some truly charismatic behaviors. They can quickly process information to transform shape, color, and even texture, blending in with ...
Plants & Animals
Nov 9, 2022
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465
Squid, octopus, and cuttlefish—even to scientists who study them—are wonderfully weird creatures. Known as the soft-bodied or coleoid cephalopods, they have the largest nervous system of any invertebrate, complex behaviors ...
Evolution
May 4, 2022
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In an ancient shallow bay of what is now Montana, the body of an octopus-like creature the size of a fist was buried on the seafloor. Some 325–328 million years later, a new paper published in Nature Communications provides ...
Paleontology & Fossils
Mar 9, 2022
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Possibly the oldest cephalopods in the Earth's history stem from the Avalon Peninsula in Newfoundland (Canada) discovered by scientists from Heidelberg University. The 522-million-year-old fossils could turn out to be the ...
Evolution
Mar 23, 2021
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129
An extensive review of cephalopod fauna from the Northwest African Atlantic coast was performed by researchers from the University of Vigo (Spain) and the Spanish Institute of Oceanography (IEO). The study was based on the ...
Plants & Animals
Jan 25, 2021
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A team at the Marine Biological Laboratory (MBL) has achieved the first gene knockout in a cephalopod using the squid Doryteuthis pealeii, an exceptionally important research organism in biology for nearly a century. The ...
Biotechnology
Jul 30, 2020
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A pair of researchers, one with Newcastle University in the U.K, the other the National Museum of Natural History in Washington D.C., has captured video footage of a cephalopod at the deepest ocean level ever observed. In ...
We are closer to understanding the incredible ability of squid to instantly camouflage themselves thanks to research from The University of Queensland.
Plants & Animals
Jan 28, 2020
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A cephalopod is any member of the molluscan class Cephalopoda (Greek plural Κεφαλόποδα (kephalópoda); "head-feet"). These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles (muscular hydrostats) modified from the primitive molluscan foot. Fishermen sometimes call them inkfish, referring to their common ability to squirt ink. The study of cephalopods is a branch of malacology known as teuthology.
Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids. The class now contains two, only distantly related, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by Nautilus and Allonautilus. In the Coleoidea, the molluscan shell has been internalized or is absent, whereas in the Nautiloidea, the external shell remains. About 800 living species of cephalopods have been identified. Two important extinct taxa are the Ammonoidea (ammonites) and Belemnoidea (belemnites).
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