The Snails Are Coming: Why We're Welcoming Advena campbellii Back to the Forest

Next week, almost 800 Advena campbellii snails will return home to Norfolk Island. Many in our community already know about this reintroduction project, and we’re thrilled to announce that the moment has finally arrived.

But why all this effort for a humble snail?

The truth is, these little creatures are vital to the health of our forest. Advena campbellii isn’t just any snail, it’s an essential worker in our island ecosystem. Using rows of microscopic teeth called a radula, they break down fallen leaves and recycle them into nutrient-rich soil. Their droppings feed fungi and microbes, turning the forest floor into a thriving hub of life that supports plants, animals, and other decomposers.

Ecologists often compare species loss to pulling rivets from an airplane. You might not notice one missing, but lose too many, and the system fails. That’s why reintroducing Advena campbellii is so important. By bolstering the wild population of this native decomposer, we’re helping to rebuild an ecosystem that has lost too many of its original parts.

Of course, projects like this aren’t without risk. But with careful planning and support from expert partners at Taronga Zoo and the Australian Museum, we’re optimistic for a successful return. The snails will first settle into their specially designed “snail shack” at the park ranger base. In a few weeks, they’ll begin trial releases into three carefully chosen valleys within the national park.

This is a proud moment for Norfolk Island conservation, and a step toward healing the land from the ground up. Stay tuned to follow their journey!