The bar chart below shows numbers of seals, whales and dolphins recorded in the Gormez Straits from 2006 to 2018.

The chart given illustrates the

population

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of three mammals in the Gormez Straits:

seals

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,

whales

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, and dolphins, from 2006 to 2018 in a quadrennial period.

Overall

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, the

number

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of species

population

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for dolphins kept increasing every

four

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years

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, compared to the other two mammals where the

population

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rates were fluctuating.

Firstly

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, the

number

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of dolphins in 2006 only reached almost 20. The

number

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raised every quadrennial to approximately more than 20 in 2010, roughly more than 30 in 2014, and elevated into more than half of the

population

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in 2006 to around 50 in 2018.

In contrast

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to the other creatures, dolphins’

population

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rates increased steadily

while

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seals

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and

whales

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’ growth went

fluctuate

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fluctuated

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. In 2006, roughly more than 40 of the

seals

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existed in Gormez Straits

while

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the

number

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of

whales

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only reached approximately half of it. In 2010, the

population

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of

seals

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went south to half of the

number

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in the previous

four

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years

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but the whale

population

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increased a little to almost 30. In the next

four

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years

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, the seal

population

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rose to more than 30,

meanwhile

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there were only roughly 20

whales

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in 2014.

Four

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years

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later, the growth of

seals

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jumped up to more than 40 and followed by

whales

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to almost 30 in 2018.