Contains facts about hammerhead sharks and bull sharks, comparing such aspects as their sizes, brain structure, and abilities.

Describes the appearance, habitat, and behavior of the three main kinds of hammerhead sharks.

In the first book of a Shark School series spin-off, young hammerhead shark Harvey Hammer has his first day at school! It's Harvey Hammer's first day at Kelpmentary School. Harvey dreams of being just like King Krusher, his comic book hero, but as the new shark in town, he worries he'll sink before he swims with the rest of the kids.