Submarine pipeline

A submarine pipeline is a pipe that runs underwater, like a line connecting two islands separated by a big body of water. It is usually made out of metal and has special coatings on it to make it waterproof. Inside the pipeline is water, oil, or gas that flows from one island to the other. The pipeline is buried deep in the ocean floor and has valves on it to control the flow. Submarine pipelines can be very long and can be used to transport resources like oil and gas from one place to another.