The book covers the region from the Red Sea, East and South Africa to Hawaii, Marshall Islands and Guam. Inside the book:
- Over 1300 full color photographs of 580+ species;
- Particular attention was paid to color variations, for some species up to 12 photos from different regions were added;
- Live photo of hundreds of species have never before appeared in field guides or popular books;
- For hundreds of species zoogeographical ranges have been extended
- Convenient pictorial guide at the beginning and index at the end of the book;
- The book contains photographs of most of the recently described Indo-Pacific flatworms, some of them are represented by holotypes.