I Built A Real Underwater Submarine From A Plastic Bottle — Step By Step 🚤

I turned a simple recycled plastic bottle into a fully working mini submarine! DIY Mini Submarine This DIY submarine can float, move underwater with a small propeller, and even demonstrates basic engineering principles. All done with household materials, no fancy tools or expensive parts. Watch how I built it step by step, tested it in water, and made it actually move! Perfect for kids, DIY enthusiasts, and anyone curious about homemade engineering projects. Mini Plastic-Bottle Boat – Easy DIY Build Anyone Can How To Make A RC Submarine - From Plastic Bottles - Amazing DIY Projects Don’t forget to like, comment, and subscribe for more amazing DIY experiments!