Placentia Bay

Placentia Bay. A large, sheltered bay on the southeastern coast of the island of Newfoundland within the Canadian province of Newfoundland and Labrador. It is a historically significant maritime region, renowned for its rich fishing grounds and as the site of pivotal international diplomacy during the Second World War. The bay's intricate coastline, dotted with numerous islands and inlets, has supported human settlement for centuries, from Indigenous groups to Basque, French, and British fishermen and settlers.

Geography

Placentia Bay is bounded by the Burin Peninsula to the west and the Avalon Peninsula to the east, opening broadly to the Atlantic Ocean. Its complex shoreline features deep fjords, such as Sound Island Tickle, and is scattered with many islands, including Long Island, Merasheen Island, and Red Island. The bay receives freshwater from several rivers, including the Northwest River, and its waters are influenced by the cold Labrador Current. Major settlements along its shores include the historic town of Placentia and the former United States Navy base at Argentia.

History

The area has a long human history, with evidence of Maritime Archaic and Beothuk presence. European activity began in the 16th century, with Basque whalers and later French fishermen using the excellent harbor at Placentia (then Plaisance) as a seasonal base. From 1662, Plaisance served as the capital of the French colony of Terre-Neuve, witnessing conflicts like the Battle of Placentia (1692). The Treaty of Utrecht in 1713 ceded the area to Great Britain, after which it became a center for the British migratory fishery. Its most famous modern historical event was the Atlantic Charter conference in August 1941, where Winston Churchill and Franklin D. Roosevelt met aboard the USS *Augusta* and HMS *Prince of Wales* off Ship Harbour.

Economy

For centuries, the economy has been dominated by the fishery, targeting species such as Atlantic cod, capelin, and crab. The historic Placentia and Argentia areas were major processing and export centers. The 20th century saw diversification with the establishment of the large United States Navy base at Argentia during the Second World War, which provided significant local employment until its closure. Today, economic activity includes aquaculture, particularly for blue mussels and Atlantic salmon, service industries for remaining maritime operations, and a growing focus on tourism centered on historical sites like Castle Hill National Historic Site and the region's scenic beauty.

Communities

Numerous communities, many historically reliant on the inshore fishery, are located around the bay. The largest is the town of Placentia, site of the historic French fortifications. Other significant settlements include Argentia, now an industrial port; Jerseyside; and Fox Harbour. Smaller outports dot the coastline and islands, such as Long Harbour, Merrymeeting, and Baine Harbour. Many of these communities were affected by resettlement programs in the mid-20th century, which consolidated populations into larger centers.

Environment

The bay supports a diverse marine ecosystem, historically one of the richest cod spawning grounds in the Northwest Atlantic. Its waters and islands provide critical habitat for numerous seabirds, including Atlantic puffins and common murres, and are an important area for humpback whales and other marine mammals. Environmental concerns have included the impacts of the cod moratorium, which profoundly altered the local ecosystem and human communities, and ongoing issues related to aquaculture development. The region's natural heritage is preserved in areas like the Placentia Bay Islands and through various ecological studies conducted by Memorial University of Newfoundland and Fisheries and Oceans Canada.

Category:Bays of Newfoundland and Labrador Category:Atlantic Ocean