Dynamic hyperrealistic underwater action scene, ultra detailed cinematic underwater photography, photorealistic realism, intense danger, panic and overwhelming force, an adult female snorkeler, 28 years old, seen from a front three quarter angle in the open ocean at the exact instant she is completely overpowered by a gigantic ancient octopus attacking from behind out of the darker depths, her body suspended horizontally in the water, no upright portrait pose, her clear diving mask and snorkel still in place, long hair streaming in the current, her eyes opened very wide in sudden fear behind the mask as she realizes she has been seized, the colossal octopus positioned directly behind her and staring at her with large intelligent glowing eyes, enormous scale contrast between creature and human, four separate muscular tentacles tightly controlling all four of her limbs, one wrapped around each wrist and one around each ankle, holding both arms pulled outward and both legs pulled apart, her entire body forcibly spread and immobilized in the water, her torso strained, her posture showing abrupt interrupted motion as if she had been swimming forward one second earlier and is now completely stopped and restrained by overwhelming natural power, additional tentacles coiling through the surrounding water to emphasize that the creature has many more limbs still free, realistic anatomy, thick powerful arms, detailed suction cups, wet textured skin, subtle turquoise bioluminescent glow, drifting particles, light rays penetrating from above, darker abyss behind the octopus, strong depth, sharp focus on the woman, the restraining tentacles and the octopus face, slightly softer distant background, frozen at the exact moment of capture, no seductive posing, no calm mood, no romantic tone, the image should convey primal danger, helplessness and the overwhelming dominance of a massive sea creature.