This bar graph depicts variations in seal, whale, and dolphin populations, in four periods, from 2006 to 2018, with intervals of four years in Georgia Strait. As reflected by the y-axis the population is measured from zero to 60 animals with intervals of ten.
At first glance, it becomes clear that the dolphin population grew from one time interval to the next, the seal population decreased and increased while the whale population remained relatively stable. Overall, the populations of sea mammals were the lowest in 2010 and highest in 2018.
In more detail, dolphins numbered around 17 in 2006, they increased by five in 2010, ten more in 2014, and became the highest population of all three creatures in 2018, at a whopping 52 dolphins. Conversely, seals had the highest numbers in 2006 at 43, then decreased to nearly half in 2010 (25 seals), and then increased in the next two periods, 35 in 2014 and 45 in 2018. Whale populations, on the other hand, remained relatively stable throughout these time periods, numbering closer to the mid-20s. Furthermore, the lowest overall populations for these intelligent aquatic animals can be observed in 2010 with an average of 23, and the highest is notable in 2018 with a mean of 40 mammals. In summary, the population changes for each of these three sea mammals in the Georgia Straits are significantly different, increase, fluctuation, and stable.