Imagine living in a stunning house that can only be accessed by boat? This is how the owners have to travel to the two homes on a tiny Welsh island.

Ynys Gored Goch, which means Red Weir Island, is a tiny island in the Menai Strait between Gwynedd and Anglesey. It is situated in the stretch called the Swellies between the Menai Suspension and Britannia bridges.

North Wales Live reported that the island is occupied by the main house and the converted smoke house where locally caught fish were processed.

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A photo shared on social media this week showed water edging up flood walls protecting the two properties. Surrounded by water in a raging tide, the island seemed to be almost floating along a channel that, at times, resembles a river more than the sea.

The stone weirs of Ynys Gorad Goch were built, complete with the fish-smoking chamber, in 1824. Extending out from the island like embracing arms, each weir faces in opposing directions so that fish could be caught whichever way the tide was flowing. It was in continuous use until 1959.

In its heyday, the weirs corralled vast quantities of herring and other fish. At least one human too: In July 1937, Bath teacher Margaret Phillips, 25, went swimming in one of the weirs and was sucked into a gully hole by a strong ebb current. It is thought she failed to hear shouted warnings because she was wearing a bathing cap.

When fishing ended, it became a get-away-from-it-all home, accessed only by boat. Custodians included acclaimed portrait artist Ishbel McWhirter. In the mid-1990s, the island’s properties and facilities were modernised for the Wirral and West Cheshire Expedition Society.

At the time, there was no fresh water and the only power was via a 12-volt car battery. Candles and a gas lamp provided light. Manweb engineers installed a new substation, laid 740 metres of cable from Anglesey (Ynys Môn) and, for the first time, provided the place with hot showers and central heating.

Following a spell as a holiday let, when it was billed as a "fantasy island", it’s now thought to be back in private ownership. At low tide, both weirs are still visible, as is a 20-metre causeway that links the two properties: at high tide, the island is divided by water.

This week’s tides were higher than average but not spectacular. When Susan Hughes' photo (top) was taken, last Monday morning, (November 13), levels were close to peaking, the five-knot tide having reversed to flow back towards Caernarfon. At 10.22am the tide reached 7.15 metres - but it was higher on the following three days.

The highest tide recorded in the strait this year was 8.03 metres on February 22. Occasional storm surges have pushed water levels as high as 11.2 metres, more than enough to swamp the island’s two properties.

An ancestor of fishing families who lived on the island said their house was flooded yearly on spring tides. “But they knew when to expect it,” he wrote on Facebook. “They took the precaution of moving things upstairs.”

Another commentator described how the house is built for flooding. “All the ground floor is red quarry tiles,” he said. “All the skirtings downstairs are concrete. There are sump pumps that empty the ground floor completely of water once the tides recede. All they have to do is rinse all the floors with fresh water and it dries within a couple of hours.”

Still, the prospect of automatic twice-yearly spring cleans was not enough to entice some to dream of living in such a unique and beautiful location. “Who the hell would want to live in a predicament like that?” said one man. Another said: “I would be up the tree by now!” referring to the smokery house tree so visible from the A55 Britannia Bridge.

Others wondered about 21st century problems, such as where to put the bins and safe places for Amazon Prime deliveries. “Quite a unique place to live but not for everyone,” noted one person. “Not convenient if you need to pop to the shops!”

It may have once been possible, had shops been around 4,000 years ago. Researchers at Bangor University believe the Menai Strait only became a permanent feature between 5,800 and 4,600 years ago, around the time when the first farmers began cultivating land in North Wales.

Some 14,000 years ago, the Menai Strait was dry and both humans and animals could cross easily from one side to the other. But as the climate warmed and the ice melted, seawater began encroaching either end of the strait.

Anglesey was finally cut off by a high spring tide 8,600 years ago. As the waters kept rising, by 2,000BC only a tidal causeway near Ynys Gorad Goch linked Anglesey with the mainland. Even then, popping to a Bronze Age takeaway was only possible at low tides.