Microphones on the seafloor recorded life under the Antarctic ice for two years – inadvertently catching seal trills and chirps that are above the range of human hearing. Could they be for navigation?
More than 450 long-finned pilot whales are stranded in Tasmania. Saving them is a race against time.
This important discovery demonstrates that cognitive maps are not the exclusive domain of humans and a few other species.
From acoustic holograms to tractor beams.
We tend to think of the oceans as quiet, when in fact they're anything but. Noise is the "forgotten pollutant", but the good news is that unlike many other pollutants it can be switched off if we try.