U-Boat Worx has announced that their Cruise Sub 7 submarines have completed more than 1,000 Antarctic submarine dives in a single season, thereby granting thousands of guests an unparalleled underwater view into one of the world's most remote and pristine destinations.

Every dive into the cold Antarctic waters provides an opportunity for new discoveries. Recently a giant phantom jellyfish was spotted three times from Viking Octantis’ yellow submarines. According to National Geographic, since first being described in 1910 there have only been around 126 confirmed encounters with the rare giant phantom jellyfish "scyphozoan Stygiomedusa gigantea".

Cruise Sub 7
The Cruise Subs were aboard cruise ships operated by different owners. Scenic’s submarine was first introduced on the Scenic Eclipse back in 2020. Viking Expedition cruises followed soon after with their Viking Octantis; and not much later, Seabourn Venture embarked upon her maiden voyage.

Cruise Sub 7
Scenic, Seabourn, and Viking's submarines are U-Boat Worx' Cruise Sub 7 model – state-of-the-art submersibles that can dive to 300 meters below the surface. The Cruise Sub 7 is built for optimal comfort and safety. It has large acrylic windows that provide 360-degree views of the underwater world, and seats specially designed to maximize legroom and headroom for guests.

Viking Octantis In Antarctica
Being battery-powered, the sub emits no pollutants, making it an environmentally friendly way for passengers to explore the depths of the Southern Ocean. Each sub is equipped with powerful external lights to illuminate the sea floor.
Credits: Boris van Kemenade/U-Boat Worx