Update May 8 2012 “Thank you for submitting your request to update your content. Your change request has been denied.”
Are there no hints? Suggestions? Guidelines?
The Ocean Views eBook can be downloaded directly from here.
Update May 24 2012 Alas:
Books must be of sufficient length or functionality. We encourage you to review your book concept and evaluate whether you can incorporate functionality, content, or both to enhance the user experience.
Additionally, books must not be intended for distribution to a limited audience (e.g., an organization or a family). For information on how to distribute your book outside the iBookstore, see the iBooks Author: Publishing and distribution FAQ (http://support.apple.com/kb/HT5071).
Use the Dropbox download link.