MURORAN, Hokkaido—Visitors from around Japan and overseas continue to flow into the municipal Muroran Aquarium here for a look at Satsuki, a seal that bangs on a plastic pail to beg for food.

Weddell seal fitted with high-tech head-mounted measuring devices to survey waters under the thick ice sheet, near Japan's Showa Station in Antarctica. [Courtesy] A seal wearing a helmet with an ...

Japanese researchers in Antarctica are deploying Weddell seals fitted out with high-tech head-mounted measuring devices to survey waters under the thick ice sheet at the South Pole. It allows ...