There are eight lessons. You will start studying the ocean and what it's made of. Next you'll learn that every living thing has a special address, and job to do in the environment. You'll study examples of who eats whom in the sea. By the middle of the book, you'll understand how living organisms depend on one another and together form an environment that is finely balanced.
Whales live in the ocean.
You'll learn to identify the common whales found around Newfoundland and Labrador and to estimate the size of a whale population. Next you'll learn what extinction means. The book finishes by looking at a resource conflict here in Newfoundland and Labrador, between whales and fishermen. There are no bad guys in this story, just problems to be understood and worked out. Through the knowledge you gain as you go along, you'll see there is a joint solution.