A seldom-spotted deep-sea octopus was seen off of the coast of California in November, marking just the fourth sighting in as many decades. The evasive creature, called the seven-arm octopus, was ...

In lieu of a penis, the male has a special mating arm called a hectocotylus. In a new study published today in Science, ...

Almost a half-mile below the surface of Monterey Bay, California, scientists recently recorded rare footage of a seven-arm octopus— only the fourth time the same research team has spotted the species ...

The discovery at Forvie in Aberdeenshire left wildlife enthusiasts mystified. What appeared to be tentacles washed up on an Aberdeenshire beach are the remains of a deep-sea creature called a ...

Scientists on California's Central Coast recently spotted a giant, evasive seven-arm octopus while on a research expedition in Monterey Bay. The rare creature, called Haliphron atlanticus, was seen by ...

Scientists on California’s Central Coast recently spotted a giant, evasive seven-arm octopus while on a research expedition in Monterey Bay.The rare creature, called Haliphron atlanticus, was seen by ...

The deep-sea octopus is "rarely seen," per the Monterey Bay Aquarium Research Institute, which has only seen it four times in four decades Researchers collected detailed observations about the octopus ...