The bar chart illustrates the populations of seals, whales, and dolphins documented in the Strait of Hormuz over a twelve-year period from 2006 to 2018.
Overall, there was a notable increase in the populations of seals, whales, and dolphins, with dolphins witnessing a striking rise by the end of the recorded period.
In 2006, the seal population was approximately 27, which increased significantly to around 40 by 2010. However, this figure saw a decline to about 35 in 2014 before climbing again to nearly 50 by 2018. The whale population exhibited a consistent upward trend, commencing at 15 in 2006 and reaching 30 by 2018, after recording intermediary figures of roughly 20 in 2010 and 25 in 2014. These figures indicate a steady growth in whale populations over the years.
In contrast to seals and whales, the dolphin population experienced substantial growth throughout the period. Starting at a modest 10 in 2006, dolphin numbers rose to around 15 in 2010. This growth continued dramatically, culminating in an impressive 55 dolphins recorded in 2018. Notably, the dolphin population surpassed both seals and whales by 2018, highlighting a significant shift in marine life in the Strait of Hormuz.