affecting fishing in the Southern Ocean? To FAQ element How can fish survive in the frigid waters of the Southern Ocean? Due to its high salinity, the Southern Ocean’s water doesn’t freeze at zero degrees [...] Southern Ocean. In winter, sea ice up to 1.5 metres thick forms atop the water. Air temperatures over the sea ice can easily reach minus 30 degrees Celsius. Given its high salinity, the ocean’s water only [...] ice? Similar to the Arctic, the Antarctic is home to numerous species that have adapted to life in, on or below the ice. For example, of the six seal species native to the Southern Ocean, only the Antarctic