This giant cephalopod dwarfed mosasaurs and other massive marine reptiles that lived during the time of the ...

Somewhere between 100 and 72 million years ago, while mosasaurs and plesiosaurs dominated the world’s oceans, something else ...

The now-extinct mollusk may have reached up to 60 feet in length, researchers have found ...

Giant octopuses may have ruled the oceans 100 million years ago, according to fossil evidence.

Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest invertebrates ever.

Hosts Kaitlen Daigle and Lauren Phinney bring back Chris Emmet, Senior Life Support Systems Aquarist from the Birch Aquarium at Scripps, to talk about the giant Pacific octopus. The giant Pacific ...

Ghost, the Long Beach Aquarium's beloved giant Pacific octopus, has died, the aquarium announced in a news release. Ghost died Tuesday after entering senescence, the end-of-life process that starts ...

A new study suggests that Nanaimoteuthis haggarti could have reached up to 19 metres in length, potentially making them the largest invertebrates ever known.

The video explores the world’s largest ocean creatures, including blue and fin whales, whale sharks, giant and colossal ...

A "kraken-like" giant octopus might have been one of the most formidable predators around 100 million years ago, scientists have found. New research led by scientists from Japan's Hokkaido University, ...