If you have ever found a smooth glass sphere in an antique store or a coastal market and not quite known what it was, it was probably one of these. 浮玉, ukidama — a Japanese glass fishing float. The kind of object that arrives in your hands carrying a history you have to ask about.

What they were made for

From the late 19th century through most of the 20th, Japanese fishermen used glass floats to keep their nets buoyant in the open sea. The floats were blown by hand, most often from recycled glass — old sake bottles, medicine bottles, whatever was available. Each one was sealed with a pontil mark at the top, sometimes wrapped in rope netting to help it grip and withstand the rough handling of commercial fishing.

They were not made to be beautiful. They were made to work — to survive salt water, weather, and the tension of heavily loaded nets. The imperfections built into each one — the bubbles trapped in the glass, the slightly irregular roundness, the variations in color from batch to batch — were simply the result of handblown recycled glass doing its job.

How they ended up ashore

By the 1960s and 1970s, glass floats were largely replaced by more durable and cheaper plastic and foam alternatives. Thousands of old glass floats were cut loose, lost at sea, or simply abandoned. The North Pacific Gyre — the circular ocean current system — carried many of them east across the Pacific toward the coasts of Alaska, British Columbia, Oregon, and Washington. Beachcombers began finding them, sometimes still in their rope netting, sometimes clouded by years in the ocean. The hunt for glass floats became its own subculture along the Pacific Northwest coast.

Some floats are still washing ashore today, decades after they were last used. Each one has been somewhere no one will ever fully know.

What they look like now

The most common colors are shades of green and blue — the natural result of the recycled glass they were made from. Amber floats are less common. Purple, red, and aqua are rare enough to be genuinely sought after by collectors. Many have a slight frosting from ocean exposure, a texture that catches light differently than clear glass. Some retain their original rope netting. No two are identical.

The imperfections that were incidental to their manufacture — the bubbles, the pontil marks, the color variations — are now exactly what makes them interesting to look at. Objects that were used hard and survived are like that. The evidence of use is the thing.

We carry them occasionally

Vintage glass floats are not mass-produced — they are found objects, and availability varies. When we have them, each one is different. If you would like one, the best time to look is when they are in stock.

→ Vintage Japanese Glass Float