Tiny Snail's Great Escape: Extinct No More!

A tiny snail, once feared lost forever, has achieved a major conservation milestone. More than 1,000 critically endangered Campbell's keeled glass snails have been released onto Norfolk Island, marking a significant phase of a recovery program. This successful reintroduction is the latest step in a collaborative breeding and reintroduction effort. The species had gone unrecorded for over 30 years before its rediscovery in 2020.

Campbell's keeled glass snails were considered extinct until 2020, when fewer than 50 individuals were found on Norfolk Island. A conservation breeding program launched at Taronga Zoo Sydney in 2021 aimed to build a healthy captive population. Starting with 46 snails, the population grew to hundreds, enabling large-scale reintroductions.

Last year, over 300 snails were released, followed by an additional 1,000 snails recently translocated from Taronga Zoo Sydney. This brings the total returned to the wild to over 1,300. This turnaround is extraordinary for a species presumed lost, demonstrating rapid recovery potential with proper habitat and planning.

The project utilized fieldwork, captive breeding, and habitat preparation, including specialized transport methods. The release site within Norfolk Island National Park is the species' only known habitat and is actively managed for predator control. Ongoing monitoring has confirmed wild-born juveniles and adults, signifying successful survival and breeding.

Scientists are fascinated by the snail's unique reproductive behavior, giving birth to live young. This knowledge has been crucial for improving breeding success, turning a small founder population into a thriving one. The final release signals a real chance for the species to become self-sustaining.

Land snails play a vital role in ecosystem health, breaking down organic matter and recycling nutrients. The Campbell's keeled glass snail project exemplifies successful conservation through shared expertise and resources. Researchers will continue monitoring the snail population, and the project's data may inform future threatened invertebrate recovery programs across Australia.