Detail:  To gaoin a general understanding of the essence of a marine aquarium, we need to ask three questions:

• What does a marine aquarium do?
• How does a marine aquarium do what it does?
• What are the basic types of marine aquarium systems and how do they function?

The first two sections of this book answer these questions. The third section introduces the aquarist to the world of marine invertebrates. Three further questions the book begins to answer are:

• What are the characteristics of the natural environment where coral reef organisms live and breed?
• How can these fantastic coral reef plants and animals be kept in a marine aquarium system?
• What are these invertebrates and how do they live?