What ways was the ocean valuable to economies in the northern colonies?

The ocean was invaluable to the economies of the northern colonies through fishing, trade, and shipbuilding. Fishing provided a vital food source and export commodity, particularly for cod and other fish. The coastal location facilitated trade with Europe and the Caribbean, allowing colonies to export goods like timber and furs while importing manufactured products. Additionally, the shipbuilding industry thrived, creating jobs and fostering a strong maritime economy that supported trade and fishing activities.