The sea around Atlantic Canada is influenced by the cold Labrador Current flowing from the north, the Gulf Stream from the south, and the large outflow of fresh water at the mouth of the St. Lawrence River. The region is home to myriad ocean creatures, and the highest tides in the world at the nutrient-rich Bay of Fundy.

Off Newfoundland lie the Grand Banks, once one of the Earth’s richest fishing grounds. Over-fishing has endangered fish stocks, and quotas are now limited.