Aquatic Wonders of Yorkshire: A Wizard's Field Guide

Aquatic Wonders of Yorkshire: A Wizard's Field Guide is a book on the wizarding fauna that can be found in Yorkshire, England.

It includes information on the Grindylow, including its development from the Grypt stage, details on its anatomy (such as the 'lure', nictating membrane, and grip), and remarks on the creature's evolutionary history (such as is regional physical variations, and its rudimentary lung).