Scientists surveying marine life near Rotuma in the South Pacific caught something unexpected on camera: a day octopus appeared to punch a grouper fish on the seafloor. As strange as it sounds, this ...

In the marine realm, diel vertical migration is a common feeding pattern: During daytime, zooplankton, fish and other marine life that feeds on these organisms hide in the darker depths of the ocean.

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 ...

A wild octopus surprised an Australian diver this week by suddenly, and quite dramatically, inflating itself with water, ballooning up like a parachute. Later, when the diver posted a video of the ...

Researchers studying a deep-sea octopus called Muusoctopus robustus have found thousands of the animals congregating at hydrothermal springs near an underwater mountain off California, raising fresh ...

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 ...