Rachel Lynette 
Pink River Dolphins [PDF ebook] 

A mother pink river dolphin gives birth to its baby in the water. So begins the life of a little pink river dolphin calf. In this coming-of-age introduction to these river mammals, readers will see how a pink river dolphin calf is cared for by its mother, how it spends its day, and how it uses sound to find food in the dark and murky water. The colorful interior spreads and gorgeous photos of pink river dolphin babies are sure to delight emergent readers.