earth49 分钟
How whales use songs to hide from predators
Some baleen whales avoid killer whale attacks by singing songs at deep frequencies that their predators cannot hear.
Science Daily4 分钟
Some species of baleen whales avoid attracting killer whales by singing too low to be heard
New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...