Scientists from Aarhus University, Denmark, studied conversations whales. Sounds unusually quiet for these animals were recorded, comparable to a whisper.
During the study, to females of the southern smooth whales and their devices recording sounds of different ranges. At the disposal of marine biologists was more than 60 hours of whale talk. It turned out that animals are talking with the calves are much quieter than usual – the sound decays already through a couple of hundred meters. Most likely, in this way they try not to catch the attention of predators that often attack babies smooth whales.
Southern whales can reach a length of 18 meters and a weight of 80 tons, females usually slightly larger than males