The scallops are four inches across but may be 40 years old or more—things grow slowly in the Antarctic. At these depths we also notice feather star crinoids, close relatives of sea stars ...

While operating the deep-sea robot nearly 7,000 feet below the surface, the machine’s camera captured a creature that appeared to be “all legs” walking across the seafloor, according to a March 18 ...

In the last few years, Antarctic sea ice has been behaving erratically. Sea ice cover has been much more variable than it used to be, with anomalies lasting much longer than previously documented.