The line graph shows the changes in the population of bears, dolphins, and whales from 2011 to 2016. Overall, the population of bears increased significantly, while dolphins experienced a sharp decline. Meanwhile, the number of whales remained fairly stable throughout the period.
In 2011, dolphins had the largest population at around 150,000, followed by whales at about 80,000, and bears at only 10,000. Over the next five years, the number of dolphins dropped dramatically, reaching approximately 60,000 in 2013 and falling to nearly zero by 2016.
In contrast, the population of bears rose steadily over the same period. It surpassed dolphins in 2013 and reached about 180,000 by 2016, making it the largest among the three species. Whale numbers, however, fluctuated slightly between 70,000 and 100,000 but showed no major change overall
