Antarctica bound, the team must prepare the first expedition to Jacques Cousteau Island before attempting the first night-time commercial sub-dive in Huatulco, Mexico.

Before they can attempt the first ever commercial submersible night dive in Huatulco, Mexico, the team must navigate a category 4 hurricane.

ason and guests go on an emotional hike in Guatemala. Jed leads a cacao mission in El Salvador, and Erwan confronts strong currents in Costa Rica.

Intense weather changes the plan for the ship's expedition of Chile. Meanwhile, Chef Tom gives Chef Strawberry the opportunity of a lifetime.

The English Narrows provide navigational challenges. Plus, the crew carry out safety training for Antarctica before exploring the Chilean Fjords.

Chef Tom challenges Chef Nik, as Captain Radomir strives to achieve a first for all on the Discovery yacht - setting foot on land at the treacherous Cape Horn.

Captain Erwan must provide a "wind block." Meanwhile, the Drake Passage delivers a rare weather event and penguins prove to be a highlight for guests.

Guests set foot on land for the first time in Antarctica. But severe weather changes plans for Penguin Island and numerous expeditions.

Helena and John experience an amazing penguin expedition on Danco Island. Plus, Brendon uses 10,000-year-old glacier ice to make an Antarctica-themed cocktail.

With the discovery yacht's journey coming to an end, the crew has thrilling surprises in store. They swim in icy waters and unveil a new vessel.