This book is part of a book series called One Million Things .

This book has been graded for interest at 10-17 years.

There are 123 pages in this book. This book was published 2009 by DK Publishing (Dorling Kindersley) .

The author, John Woodward, has been a wildlife enthusiast for many years, with a particular interest in the more bizarre life-forms that flourish in the world's oceans. He has written more than 30 books and many hundreds of articles on all aspects of wildlife, earth sciences and the natural world.