"a professional underwater robotic inspector for steel structure corrosion detection, industrial design perspective: core components: ① multi-spectral camera array (uv + visible + ir lenses) embedded in a rotating sensor turret. ② magnetic adhesion tracks with hexagonal anti-slip grooves, capable of climbing vertical steel surfaces. ③ ultrasonic self-cleaning module emitting high-frequency vibrations to remove fouling from lenses. ④ modular tool bay housing corrosion thickness gauge and sample collection grippers. structure: carbon fiber main chassis with ip68 waterproof joints. retractable stabilization fins for high-current environments. front-mounted led light bars (cold white + uv dual mode). scene: operating on a rusted steel bridge pillar underwater, scanning oxidized areas marked by orange-red corrosion spots. micro bubbles rising from thrusters, silt particles suspended in dark blue water. style: technical illustration, industrial realism, matte black and functional blue color scheme, sharp focus on mechanical details, depth of field, 8k resolution, unreal engine 5 rendering."