cephalopod
Octopuses May Have Vivid Nightmares, Video Suggests
Costello, a male Brazilian reef octopus, had "bizarre" defensive outbursts while sleeping in a lab
What New Tech Is Revealing About Squishy, Prehistoric Cephalopods
Researchers have adopted innovative means, from cutting-edge scans to swimming robots, to reveal more about how the creatures lived
Watch a Deep-Sea Squid Carry Hundreds of Pearl-Like Eggs
Footage taken 56 miles off California's coast documents rarely-observed brooding behavior
Scientists Figure Out Why Female Octopuses Self-Destruct After Laying Eggs
A new study finds several biochemical pathways, including one that produces a precursor to cholesterol, may be key to this behavior
Ancient Ten-Armed Octopus Relative Named for Joe Biden
The discovery of 'Syllipsimopodi bideni' pushes back the fossil record of the vampyropods by over 82 million years
Female Octopuses Throw Things at Male Harassers
Scientists observed common Sydney octopuses launching shells and silt at particularly annoying individuals
NASA Is Launching Tardigrades and Baby Squid Into Space
The experiments could help astronauts stay healthy and survive longer outside Earth’s atmosphere
New Species of Dumbo Octopus Identified Using 3-D Imaging Techniques
Techniques such as MRI and CT scans may allow researchers to identify and study rare sea specimens without the need for dissection
A Very Angry Octopus Goes Viral After Lashing Out at an Australian Tourist
A video posted to social media captures the cephalopod's arm-flinging attack
Cuttlefish Show Impressive Ability to Exert Self-Control
The clever cephalopods ignored so-so food for up to 130 seconds in order to get their favorite snack, live grass shrimp
Watch Octopuses Sucker-Punch Fish
Researchers caught the eight-armed sea creatures in the Red Sea slugging fish during collaborative hunts
See Strange Squid Filmed in the Wild for the First Time
The elusive creature is called the ram’s horn squid after a spiral-shaped internal shell that is often found by beachcombers
Octopuses Taste Food With Special Cells in Their Suckers
New study reveals biology behind one of the octopus' many super powers
The Wonderfully Weird World of Deep-Sea Squids
For this month's "Meet a SI-entist," the Smithsonian's curator of cephalopods says these are the "intelligent invertebrates"
The Legend, the History and the Science Behind Seattle's New Hockey Team Name
NHL fans, meet the Seattle Kraken—named for a mythical beast that may have been inspired by the very real giant squid
Deep-Sea Squids Glow to Communicate in the Dark
Researchers suggest that the Humboldt squid uses bioluminescent backlighting for visual cues in the dark deep sea
Dazzling Display of Seals Wins Underwater Photographer of the Year Award
French photographer Greg Lecoeur triumphed over more than 5,500 submissions from hundreds of artists around the world
Ecstasy Turns Antisocial Octopuses Into Lovestruck Cuddle Buddies—Just Like Us
The genetic and neurological similarities between octopuses and humans shed light on how creatures became social beings
Operation Calamari: How the Smithsonian Got Its Giant Squids
After a decade on view, these cephalopod specimens have a growing fan base
