UK's rarest snail gets second chance as zoos join conservation effort

In a greenhouse in rural Wales, Ian Hughes tends to tanks of creatures so small they fit on a fingertip. The glutinous snail—Myxas glutinosa—once lived across British waters. Now it survives in exactly one place: Llyn Tegid, Wales' largest natural lake, nestled in Snowdonia. Pollution and habitat loss erased it everywhere else. Hughes, drawn in by what he calls their cuteness, has made saving them his life's work.

The snails are remarkable in their fragility. Their shells are gold-flecked brown, delicate enough to crush without thinking. They have antennae comically outsized for their bodies—Hughes describes them as "big floppy ears." They eat algae and, because they thrive only in clean water, they serve as a living measure of a lake's health. For years, Hughes waded into Llyn Tegid under license from Natural Resources Wales, collecting specimens and studying them. He built small concrete shelters in the lake itself. Then he brought some home to his greenhouse in Llanarth, uncertain whether they would survive an hour, let alone a day.

After four months, something shifted. Eggs appeared in the tank. No one had ever documented glutinous snail eggs before. Hughes had been working on instinct, trying to reverse-engineer what a species needed to live when almost no one alive had ever seen it breed. When the eggs hatched, it became what he calls a life-defining moment. The work expanded. His wife Kerry and their three sons—Jake, George, and Ben—joined in. Ben, now 27, explained the mindset required: wading into a freezing lake in January, knowing that every organism, no matter how small, holds the ecosystem together. Remove one cog and the machine stops.

The family's success caught the attention of the British and Irish Association of Zoos and Aquariums. What began as a backyard project became the seed of something larger. Wingham Wildlife Park in Kent received 24 snails. Askham Bryan in York, Longleat in Wiltshire, Dudley Zoo, and Chester Zoo all joined the effort. Each facility is building what conservationists call "ark populations"—backup breeding colonies that exist nowhere else. Samantha Eden, assistant curator at Wingham, traveled to the Hughes home to collect her share. The park has built three new ponds specifically for the snails, spaces designed to let staff learn their needs and breed them in controlled conditions.

The Freshwater Habitats Trust is already scouting locations where snails might eventually be released back into the wild. Nicky Needham, head of species management at BIAZA, is coordinating research into the snails' genetics, ecology, and care requirements. Within three years, she hopes, reintroduction could begin. The effort sits within a broader £60 million government-backed scheme to protect rare British species. Simon Jones, assistant warden at Eryri National Park, acknowledged that climate change has intensified the threat to species like this one. But with multiple zoos now holding populations, the odds shift. There is redundancy now. There are experts. There is a plan.

For Hughes, the momentum feels like vindication. He has always believed these snails deserve the reverence we give to ancient artifacts—they are, he says, as valuable as anything in an Egyptian museum. Spreading the population across multiple facilities means the species no longer rests on a single lake, a single family, a single greenhouse. It means the glutinous snail, once common enough that no one thought to protect it, has been given a second chance. Whether it survives depends on what happens next: whether the zoos can sustain the populations, whether suitable habitat can be restored, whether the snails can adapt when they return to the wild. For now, they are alive in places they have never been before, held in the hands of people who chose to save them.