Is Submarine: Life Under the Waves coming back?

Submarine: Life Under the Waves's return is unconfirmed. The show last aired on September 20, 2021, and has not announced a new season or episode since then.

Submarine: Life Under the Waves was a documentary series that aired in 2021, providing an inside look at the operations of the nuclear-powered HMS Trenchant. The series depicted the crew's tense underwater missions, exploring how they managed to survive in confined spaces at depths of over 400 meters in the North Atlantic. It focused on their efforts to defend the British Trident nuclear deterrent and gather intelligence off the Russian coastline.

The series featured Perry Fitzpatrick as the narrator. It was a 60-minute program with one season consisting of two episodes.