John and David are swimming out at sea when they see a shipwreck.
They dive down to the old ship and look around. They are very
excited when they see an old treasure chest. What are they going to
find inside it? But first they have to worry about a big shark... A
series of colorful, high-interest written readers for ESL students
and striving readers, Foundations contains carefully sequenced
vocabulary and grammar presented contextually through the
adventures of a group of teens living in a small U.S. town.