In Mining Rush 3D Underwater, you get to be a super cool treasure hunter diving deep in the ocean! You control a tiny submarine that zooms around looking for shiny gems and rare treasures hidden among colorful coral reefs and funny fish. You have to dodge tricky obstacles like big rocks and jellyfish that want to bump into you! Collecting coins makes your submarine even better, so you can go deeper and find more awesome stuff! The water is super sparkly, and every dive is an adventure. Can you find all the treasures and become the best underwater explorer ever?