While no book of this size can completely cover such a broad topic area this book makes a serious try. The authors did a good job and enclosed as much information as they could in less than 400 5*8 inch pages. The definitions include terms from marine biology, physical, chemical, geological and biological oceanography. With about 1800 terms, many of them cross referenced, I have only failed to find what I was looking for a couple of times. There are generous illustrations, and I don't think it could have been more visual given the size. The term entries seem a bit lopsided with some things being given more coverage and others merely touched on. I think that maybe the editors should have caught this, or perhaps two volumes, one for biology and one for the rest.
All in all this encyclopedia would be useful to anyone interested in the multi-disciplined nature of marine science.