Therese M. Shea 
Why Do Lobsters Eat Each Other? [PDF ebook] 
And Other Odd Crustacean Adaptations

There are few behavioral adaptations that seem more odd to us than cannibalism. Scientists have noticed the rising incidence of lobster cannibals in recent years, and the reason may be connected to global warming. Readers will find the odd information about these and other crustaceans to be a fascinating study in animal adaptations, a crucial component of the elementary science curriculum. Vivid photographs and informative sidebars reinforce the engaging text.