Create a large, stylized utility axe designed by an alien species from a volcanic undersea world. The axe should look functional but crafted from organic and coral-like materials — with asymmetrical blades resembling fossilized shell, molten reefstone, and bone. Instead of a combat edge, the blade should look worn and utilitarian, used for tasks like harvesting or carving. Bioluminescent veins of teal and purple pulse softly through the handle and axe head, like living energy channels. The grip is wrapped in alien hide or smooth shell plating, reinforced with barnacle-covered braces. Stylize the design with exaggerated proportions and painterly textures, like in Sea of Thieves. Emphasize its role as a labor tool used by alien brutes or underwater builders — brutal yet practical.