Southern Ocean

S1 E2: The team investigate why parts of the Southern Ocean are warming twice as fast as the rest of the world's oceans, and take a look at the impact of this phenomenon. They also go in search of the weedy sea dragon, and explore kelp forests to investigate how they're threatened. Plus, the team dive one of the thousand shipwrecks in these waters, and in a sunken valley, they search for mysterious deep ocean creatures.