Final answer:
The largest ocean in the world is the Pacific Ocean, and the smallest is the Arctic Ocean. The Pacific Ocean touches continents like North America, Asia, and Oceania, while the Arctic Ocean is in the polar region.
Step-by-step explanation:
Of the four oceans of the world, the Pacific Ocean is the largest in terms of area. It is bordered by countries like North America, South America, Asia, and Australia. On the other hand, the smallest ocean is the Arctic Ocean, which is mostly surrounded by the Arctic Circle and consists of the North Pole region.
While the Pacific Ocean extends over a vast expanse, touching upon multiple continents including North America, Asia, and Oceania, the Arctic Ocean's size is significantly smaller and comprises of ice-covered waters much of the year, affecting its biodiversity and ecosystem.