"Did you know that some plankton make their own light? This amazing ability is called bioluminescence. Some glow to attract mates or scare off predators. Look inside to learn all about bioluminescent plankton-and get ready for a glow show! This book includes a table of contents, glossary of key words, index, author biography, sidebars, and a feature about related glowing creatures"--Provided by publisher.

Plancton quiere jugar con Cangrejito, pero a Cangrejito no le gustan los juegos. Plancton quiere jugar al escondite. Plancton quiere jugar a policías y ladrones. ¿Querrá Cangrejito jugar alguna vez? Plankton wants to play a game with Crabby, but Crabby is such a grumpy crab he does not want to play any games at all.

"Discover the enormous world of some of the planet's tiniest creatures-and the giant job they do in our ecosystem. From zooplankton to phytoplankton, these small-scale superheroes are the foundation of the ocean's food chain, keep our climate in check, generate oxygen-and much more"--

It is late and Crabby just wants to sleep, but Plankton keeps Crabby awake with questions and chatter--until a request for a bedtime story takes an unexpected turn.

Crabby is a very grumpy crab, so Plankton tries to find a game that will cheer Crabby up, but Crabby does not want to play Simon says or hide-and-seek---will a game of tag be more to Crabby's taste?

When Crabby gets sick, Plankton is determined to play doctor and take care of his friend, even if Crabby does not want the help--until Crabby realizes that he can get Plankton to do all of his household chores.