The population of Australia’s only unique seal has dropped by 60% over the past 40 years. According to a new study of the number of pups born at breeding sites across Southern and Western Oz, there are just over 2,700. Already categorised as endangered, high levels of mercury and other toxic chemicals in the water and fishing practices are behind the decline. But it’s not the only aquatic creature that has experts worried. From the more than 100,000 ‘love songs’ recorded by frog-lovin’ Aussies using the Australian Museum’s FrogID app between 2017 and 2020, it’s believed more than 70% of 87 species of the amphibian weren’t thriving in human-modified habitats. “If our frogs decline, our environment and ecosystems aren’t healthy,” lead researcher Gracie Liu said.