Noun
a large expanse of floating ice
Source: WordNetAdult narwhals mate in April or May when they are in the offshore pack ice. Source: Internet
Furthermore, under this hypothesis the lack of oceanic pack ice allows increased exchange of waters between the Arctic and the North Atlantic Oceans, warming the Arctic and cooling the North Atlantic. Source: Internet
Having now seen for myself how he travelled across the pack ice, I am more convinced than ever that Peary did indeed discover the North Pole." Source: Internet
However, killer whales are merely seasonal visitors to Arctic waters, and do not approach the pack ice in the summer. Source: Internet
In the Antarctic, killer whales range up to the edge of the pack ice and are believed to venture into the denser pack ice, finding open leads much like beluga whales in the Arctic. Source: Internet
Narwhals from Canada and West Greenland winter regularly in the pack ice of Davis Strait and Baffin Bay along the continental slope with less than 5% open water and high densities of Greenland halibut. Source: Internet