This expansion pack plunges you into the cold, briny waters of oceans near and far. Who knows what strange things lurk beneath the surface? The expansion includes four scenarios:

Atlantis Swallowed by Becky Annison. Thousands of years ago and the sea levels are lapping at the heels of Atlantis. With greater technological prowess than anything a modern civilization has seen, they are confident they can hold back the waters. But a deeper rot has seeped in through the cracks.

Blow Ye Winds by Sasha Sienna and Jonathan Sims. In 1831, the British port of Peterhead processed the butchered blubber of over a thousand whales a year, hunted and killed off the coast of Greenland. Dr Andrew Campbell has left his landlocked life behind to serve as surgeon on the whaling vessel Sanguine, but his first voyage will not be an easy one as a strangeness begins to affect the ship.

The Siren's Caw by W.H. Arthur. Every summer, visitors from London and beyond are drawn to the seaside resort of Brighton. Are they called here by the eldritch forces from beneath the waves, or is there something even more sinister from across time and space?

Through The Waters, Darkly by Josh Fox. A research and exploration base has been set up at the bottom of the deepest place on Earth: the Mariana Trench. The small team of scientists are isolated in the cold depths as they explore the last frontier of our planet. Isolated, yes: but not alone.