(back cover) Buying invertebrates for your marine aquarium can be an uncertain process. This book puts your mind at ease by providing essential information abou

This is the largest species of sea pen encountered by divers in the northern Pacific. the short, slender branches of the stalk are white, as are the polyps.

"The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology

"For each of the thirty-two currently recognized phyla, Invertebrates presents detailed classifications, revised taxonomic synopses, updated information on gene

So much has to be crammed into today's biology courses that basic information on animal groups and their evolutionary origins is often left out. This is particu