There is a lot of information here, and it is interesting, unfortunately most of it isn’t about narwhals. At least not live narwhals. There is a lot told about the myth of unicorns and why so many people wanted unicorn horns and were willing to spend so much money to get them. And there is a lot about how the narwhal tusks were sold as unicorn horns and how they ended up all over the place. There is a lot about the Inuit and how they hunt narwhals. But about live swimming narwhals? Not so much. There are some great pictures. (Once again many of them not of narwhals.) I learned a lot in this book just not about what I thought I would. So if you are not interested in the use of unicorn horn in medicine, or the history of the narwhal hunt, or the trade route of the tusks then don’t bother with this one.
Reviewed for http://eho.org should be on site in the next few months. Nice children's book about Narwhal: Unicorn of the Sea. 32 pages with lovely pictures.