Create a detailed 3D model of an ancient deep-sea exploration mech, encrusted with coral, rust, and bioluminescent algae. It has a humanoid design, claw-like manipulators, a cracked glass cockpit, and exposed wires and pistons. Engraved insignias hint at a lost expedition. Surround it with eerie deep-sea life—glowing jellyfish, alien fish, and hydrothermal vents casting an ominous glow. The scene should feel mysterious, as if the mech was abandoned after a failed mission.