A towering gothic Cthulhu-inspired sea monster, humanoid shape with elongated limbs, massive wings folded back, and a grotesque mouth lined with rows of sharp teeth. Its body is covered in dark, organic armor plates and slimy textures with tentacles emerging from its back and jawline. The design is otherworldly, ancient, and terrifying — inspired by H.P. Lovecraft. The model should have clean geometry, visible mouth interior, and even topology for animation and rigging in Blender. Dark green and black tones, highly detailed but rig-friendly structure.