Author Melissa Stewart takes her readers on a side by side comparison of these two large ocean animals using the headings:

Fish or Mammal?,  Scales or Skin?,  Tail or Flukes? , Gills or Lungs? , Pup or Calf? , and Smell or Sound?

Sharks are always on the left page with the dolphins always opposite on the right page.

The easy straight forward facts are, also, presented in a graphic organizer on page 18.

Contains: web sites, books, index, contents, and words to know