"Cangrejito es un cangrejo muy gruñón. Plancton quiere alegrar a Cangrejito. Plancton le cuenta un chiste a Cangrejito. Plancton le hornea un pastel a Cangrejito. ¿Podrá Cangrejito sonreír alguna vez?" -- Back cover. Crabby is not a happy crab, in fact Crabby is quite crabby, so pushy Plankton, who is always trying to cheer up fellow marine creatures, bakes Crabby a cake--but will Crabby finally smile?

The kingdom Protista includes organisms, most of them microscopic, which have both animal and plant features. With such a diversity of life forms in this grouping, the features of this kingdom are quite varied. This intriguing book shows how this group's unusual members are generally classified according to an absence of a feature, such as the lack of complicated cell structure. Learn about such exotic organisms as algae, dinoflagellates, radiolarians,...

Photographs and text provide information about the variety of ocean-dwelling creatures known as zooplankton, with discussion of the importance of these animals to the ocean food web.