A close up of a ship in the ocean with a giant octopus

gigantic slug snail monster, sailing ship, underwater, towering waves, ominous clouds, epic battle, dark ocean depths, mythical creatures, crashing waves, dramatic lighting, colossal, stormy weather, swirling whirlpool, monstrous creature towering over ship, treacherous sea voyage, turbulent waters, eerie atmosphere, ancient legends, intense struggle, monumental clash, epic scale, monstrous proportions, monstrous presence emerging from the depths, powerful creature, triumph over adversity, overcoming the odds. (best quality, high-res, dramatic lighting), immense detail, vivid colors, lifelike textures, captivating composition, green light.