Why there is a huge amount of fish increased in the year of 1952?

The significant increase in fish populations in 1952 can be attributed to several factors, including favorable environmental conditions, such as optimal water temperatures and abundant food sources, which supported fish reproduction. Additionally, changes in fishing regulations or practices may have allowed fish stocks to recover. Furthermore, natural cycles in marine ecosystems can lead to fluctuations in fish populations, contributing to the observed spike in that year.