Residents kept reporting dolphins in two Japanese bays. Underwater microphones revealed how frequently they visit

Scientists from Kyoto University used underwater microphones to monitor dolphins in two bays along Japan's Sea of Japan coast. They found dolphin sounds only about once every 10 days, suggesting the animals visit these waters occasionally. The study also shows that long-term underwater listening can help scientists better understand and conserve marine life.

Residents kept reporting dolphins in two Japanese bays. Underwater microphones revealed how frequently they visit
Scientists from Kyoto University used underwater microphones to monitor dolphins in two bays along Japan's Sea of Japan coast. They found dolphin sounds only about once every 10 days, suggesting the animals visit these waters occasionally. The study also shows that long-term underwater listening can help scientists better understand and conserve marine life.