Why did fishing decline in Brittany during the 20th century?

The decline of the fishing industry in Brittany during the 20th century was driven by several interconnected factors:

• Resource Exhaustion and Overfishing: The depletion of marine resources, caused by widespread overfishing, necessitated strict limits on catches, which significantly reduced the industry's output and economic viability.12
• Technological Shifts: The development of large-scale, deep-sea fishing operations elsewhere in Europe shifted the industry's focus and competitive landscape, making traditional coastal methods less dominant.1
• Environmental Challenges: The industry faced increasing difficulties due to pollution, which negatively impacted marine health and productivity.31
• Economic and Structural Issues: The French fishing sector as a whole struggled with a fragmented structure and inadequate modernization of boats and port facilities.3

While these factors led to a decline in the industry's overall importance, fishing remains a defining characteristic of several Breton ports, including Concarneau, Lorient, and Le Guilvinic. In some areas, such as Ille-et-Vilaine, tourism has surpassed fishing as the primary economic driver.32