Whales and other marine mammles

What is this book about?

I am reading Whales and other Marine Mammles. I feel this book is interesting and sad. The reason why I say sad is because they talk about whales that are being killed . The people use the meat and blubber as fuel for cooking. They also use their teeth and bones. I found this very sad that whales were killed.

Why is this powerful?

I thought this book was powerful because it talks all about marine animals and what happen back then