Ancient fossil reveals first amphibian species to live entirely at sea

Scientists have identified a 237-million-year-old fossil, Gerrothorax maritimus, which suggests some ancient amphibians lived exclusively in marine environments. Found in deep-sea sediments, the creature featured a flattened, armored body suited for oceanic life. This discovery challenges previous assumptions about amphibian habitats during the Late Triassic period by confirming their adaptation to saltwater.