The bar chart illustrates the numbers of three marine species – seals, whales and dolphins – recorded in the Gormez Straits between 2006 and 2018.
Overall, dolphins experienced continuous growth and recorded the highest figures by the end of the period, while seal and whale populations varied moderately over time.
In 2006, seals were the most numerous species, with figures slightly exceeding 40, while the populations of whales and dolphins were considerably lower, at just over 20 and around 15 respectively. However, seal numbers fell sharply to approximately 23 in 2010. During the same year, whale numbers increased marginally and overtook seals, while the dolphin population stood at about 21.
By 2014, seal numbers had recovered to roughly 35, in contrast to a slight decline in whales, whose population dropped to around 21. Dolphin numbers, meanwhile, continued to rise and, over the remainder of the period, grew markedly. By 2018, dolphins had surpassed seals to reach a peak of approximately 51, while the corresponding figures for seals and whales were about 43 and 29 respectively.