This is a fantastic book, and along with the other two books by this author you should be able to ID any marine creature you encounter!
The book lists virtually all types of creatures including anemones, barnacles, jellyfish, flatworms, crabs, shrimp, octopuses, urchins, and much, much more!
Each entry has an excellent picture, the name, family, size, depth, and other detailed information.
The pictures alone are worth the cost of the book!
This is definitely the book you want to have with you when you dive or snorkel. Buy it today, you won't be disappointed!