The line graph illustrates the number of Bears, Dolphins, and Whales recorded between 2009 and 2014.
Overall, it can be clearly seen that the population of Bears rose dramatically throughout the period, while the number of Dolphins fell sharply. In contrast, the figure for Whales showed some fluctuations but remained relatively stable compared to the other two animals.
In 2009, Dolphins had the highest population, at around 150, while Bears were the least numerous, with only about 10. However, the number of Dolphins experienced a rapid decline year by year, and by 2014 it dropped to nearly zero. By contrast, the population of Bears increased steadily from around 10 in 2009 to almost 190 in 2014, becoming the most dominant species by the end of the period.
As for Whales, their numbers started at approximately 90 in 2009 and showed slight ups and downs over the years. The figure peaked at about 110 in 2010, then fell to around 80 in 2012, before rising again close to 100 in 2013. Nevertheless, by 2014, the number of Whales had decreased slightly to around 70.
