Claire Nouvian
This book is gorgeous. While the subject matter, sea creatures of the deepest abysses, is certainly fascinating the pictures are what makes this book so wonderful. Some show perfect, tiny jeweled creatures floating in the dark. Others, lit by ROV lights, look like computer generated movie sets. Unreal and intensely beautiful.
http://www.press.uchicago.edu/books/nouvian/nouvian_gallery.html