Which of the following is NOT correct about the bl...

Câu hỏi: Which of the following is NOT correct about the blue whale's physical description?

A. It is very easy to discover the appearance of a blue whale via its heart beat.

B. Male blue whales are the longest in their species.

C. The calls of the blue whale are louder than those of any animals on the Earth.

D. A small dorsal fin is also the identity of the blue whale.