Researchers at Sydney’s Taronga Zoo train seals and sea lions to participate in hearing tests as part of a project to understand how human-made noise affects marine mammals. The work involves conditioning the animals to respond during controlled testing designed to measure their hearing capabilities.

According to multiple outlets, the effort includes Curtin University and the Taronga Conservation Society Australia. Reports describe the tests as among the first of their kind for Australian sea lions and long-nosed fur seals, aiming to identify the range of sounds these animals can detect. The findings are intended to support better assessment of potential impacts from underwater and coastal noise produced by people.

Outlets emphasize the same core steps—training the animals and running hearing evaluations—but differ slightly in the species highlighted. Together, the coverage frames the research as foundational baseline science that can inform how marine mammal hearing is considered in relation to increasing noise in the environment.