When do you know someone best? When you read their biography or when you have a conversation with them? Of course, it’s when you have a one-on-one visit. Go down in a submersible, the HOV (Human Occupied Vehicle) Alvin, to make the journey to their home. You’ll meet the weird, the cute, the flashy, and the fierce creatures of the deep. In this book, you won’t just read a bunch of facts about these remarkable animals—you can learn to know them personally. They’ll talk to you about themselves, their relatives, and their enemies. As a surprise bonus, you will find out about the many ways your new friends are helping us solve some of our medical problems. Suppose you are interested in learning more about what happens in the ocean. In that case, two people (real people) will tell you what they were like at your age and what motivated them to make the ocean, which covers about 70 percent of the earth’s surface, their life’s work.