This is wine redefined, from the sea floor to your glass.

Australia is known for its diverse wine regions that produce top drops in droves. We’re home to the best shiraz in the world and some of the coolest oenophile-approved experiences you can find. But this WA venture is taking it to new depths – literally. Welcome to Australia’s first underwater winery.

Underwater wine: how it works

It may be situated among Western Australia’s famed Margaret River wineries, but Subsea Estate doesn’t resemble your typical vineyard. Instead of unfolding across verdant hills, its cellar door can be found off the coast near the town of Augusta, where the Southern and Indian oceans meet.

A 20-metre dive below the ocean’s surface, the 413-hectare estate comprises specially crafted wine barrels anchored to the sea floor. It’s an intricately designed production process that is painstakingly adhered to by the team at Subsea, made up of leading wine pioneers from both Australia and abroad. But why? And what is the result?

The technique was first introduced by French company Winereef , which has spent over 17 years perfecting its world-first subsea winemaking operation. The concept posits that the ocean’s current and natural sway stirs the wine and keeps the yeast in suspension, which creates a secondary fermentation process.

Hydrostatic pressure, the weight produced by the water column pressing down on an object due to gravity, allows the yeast to produce flavour notes not available on land.

But it doesn’t stop there, because the ocean’s energy is constantly changing, and each batch produced is completely unique. The wines all have their own character, touched by Mother Nature in a different way and offering the truest expression of each season.

How to experience it for yourself

If you’re intrigued, you’re not the only one. Subsea Estate’s innovative winemaking process has attracted attention from across the country – which is why its cellar door is open to the public seven days a week. And no, you won’t be pairing your wine with a scuba suit.

Sitting pretty back on land in Augusta Boat Harbour, Subsea Estate invites guests to sip its one-of-a-kind creations with views of the ocean that nurtured them. While walk-ins are welcome, the best way to explore Subsea’s range is with a guided experience. Join a member of the team for a 90-minute Subsea Estate & Rare Foods Abalone and Wine Tour.

That’s right – not only is Subsea home to some of the world’s most innovative wines, it’s also in one of Australia’s top seaside towns for seafood. Your tour starts in the on-site abalone facility, where you’ll witness firsthand how these premium seafood delicacies are prepared for export. Guests can get up close to the tanks and even hold a live abalone if they wish.

From there, you’ll be led to Subsea’s cellar door, where you can watch local fishermen return with their catch across Flinders Bay from the sunny deck. Not only will your host walk you through the entire winemaking process, but you’ll enjoy the results firsthand – paired perfectly with the fresh abalone from earlier.

The details

Subsea Estate is located in the town of Augusta, around a 3.5-hour drive south of Perth. The cellar door is open from Monday to Sunday, 9am–4pm. Bookings for the Subsea Estate & Rare Foods Abalone and Wine Tour are essential. The experience is priced at $89 per person and can accommodate groups of up to 15 people. While the tour allows for up to 1.5 hours, guests are encouraged to linger for as long as they please.