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the St. Lawrence seaway
The body of water that connects Lake Ontario to the Atlantic Ocean is the Saint Lawrence Seaway. It has a large system of locks and canals to allow boats to travel from the Great Lakes to the Ocean.
The Pacific and the Atlantic Oceans
Atlantic and Pacific Oceans
the pacific and Atlantic Ocean
The Atlantic Ocean and Lake Ontario.
The Atlantic Ocean and the Ontario Lake
Hudson Bay and Atlantic Ocean
St. Lawrence River
It touches the Pacific and Atlantic ocean
Pacific Ocean and Atlantic Ocean.