Under the Sea
A mother, Soon-hee, and her son, Hae-seok, lived in a village for a long time. One day, they are told that sea levels have risen and that they have to leave the village. They begin to learn how to swim together to stay in the village. Meanwhile, Soon-hee's friend Bok-young gives Soon-hee something to help her swim...
Below are the streaming services currently carrying the movie “Under the Sea” in the United Kingdom, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in the United Kingdom can differ from other countries.
Where to watch Under the Sea in United Kingdom
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Not currently available on the supported providers in United Kingdom.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 23 Sept 2026.