Humpbacks

Humpbacks are large and grayish

Humpback whales are enormous creatures

Humpbacks

Humpback whales are enormous creatures — about the size of a school bus.
They are known for their haunting and melodic songs and for breaching the water with amazing acrobatic abilities.
Humpbacks don’t normally have a hump on their backs; the name comes from the large hump that forms when they arch their backs before making a deep dive into the ocean.
Source: Live Science