Doctor Who: Fury from the Deep 1968 ( 8.8)

When the TARDIS lands in the sea off the eastern coast of England, the Second Doctor, Jamie, and Victoria investigate a nearby beach, which seems to have an improbably large amount of sea foam as well as a major gas pipe marked “Euro Sea Gas” What is really happening at "Euro Sea Gas." Can the Second Doctor, Jamie and Victoria survive "The Fury from the Deep"!