Dolphin Diplomats in Japan's Secret Seas The Sea of Japan has long been a mystery to scientists, with one of its most intriguing enigmas being the frequency of dolphin visits.
For years, residents and fishers reported spotting dolphins close to land, but researchers had no concrete data on their habits or behavior.
Now, thanks to an innovative study using underwater microphones, we have a clearer picture of what's happening in Japan's coastal waters.