The line graph illustrates the number of four types of fish – Atlantic cod, Haddock, Yellowfin tuna, and Swordfish – over a 25-year period beginning in 1982.
Overall, it is clear that the populations of Atlantic cod and Yellowfin tuna showed a downward trend, whereas Haddock and Swordfish remained relatively stable throughout the period. Among the four species, Atlantic cod consistently recorded the highest numbers, while Swordfish contributed the least.
Looking at the chart in detail, Atlantic cod stood at around 250,000 in 1982, the highest figure on the graph. Its number dropped sharply to about 150,000 by 1992, before rising slightly to approximately 175,000 in 2002. However, it then experienced a significant decline, falling to just below 150,000 by the end of the period.
In contrast, Yellowfin tuna started at 150,000 in 1982 and grew dramatically to reach 200,000 by 1992, surpassing Atlantic cod. Afterward, its population fluctuated but eventually dropped steadily to around 100,000 in the final year.
Meanwhile, both Haddock and Swordfish maintained relatively stable trends over the 25 years. Haddock remained close to 75,000 throughout, while Swordfish consistently stayed at around 10,000, making it the least abundant species.