Giant, intelligent octopuses may have once ruled the ancient seas. Modern octopuses are known for their intelligence and ...
Lurking in the ocean's twilight zone - an area between 650 and 3,000 feet below the surface where light rarely reaches - is the seven-arm octopus (Haliphron atlanticus). Also known as the septopus, ...
A new study suggests that Nanaimoteuthis haggarti could have reached up to 19 metres in length, potentially making them the largest invertebrates ever known.