Giant octopuses were massive cephalopods that dwelled in deep coastal waters, sea caves, and lightless trenches. They were patient ambush predators, relying on camouflage and sudden violence to attack smaller Beasts rather than pursuing their prey directly. Their soft bodies allowed them to squeeze through narrow crevices, using the suckers on their tentacles to move with patience, while their mottled skin shifted color and texture to match stone, coral, or sand.
A giant octopus attacked by ensnaring prey in its long, powerful tentacles; though their bodies were around 2 to 3 feet in length, these apendages could extend anywhere from 10 to 20 feet across. Barbed suckers along the eight tentacles gripped with crushing strength, holding victims fast while the creature dragged them beneath the surface. Its curved beak delivered a venomous bite that weakened struggling targets. In water, it moved with surprising grace, jetting backward in bursts or flowing across the seafloor in near silence. Though animal in nature, giant octopuses possessed near-sentient awareness, learning skills from failed hunts and avoiding persistent threats such as Great White Sharks.
Despite their size, giant octopuses were solitary and cautious. They preferred isolation and guarded their chosen lairs fiercely. Sunken ruins, flooded caverns, and shipwrecks often bore signs of their presence, marked by scattered bones and the husks of cracked shells. Some were known to collect curious objects taken from the dead, arranging them within their dens without clear purpose.