The H.P. Lovecraft Wiki

This subject contains information from the Expanded Cthulhu Mythos, and not based on H.P. Lovecraft's works directly. The Cthäat Aquadingen (trans. Things of the Water) is a fictional grimoire created by British author Brian Lumley.


A combination of occult reference work and spell book, the Cthäat Aquadingen has a focus on entities associated with water, and Ubbo-Sathla in particular. It is unknown who penned the original text, but since its first appearance in Germany around 400 AD, a number of translations have surfaced including a Latin version in the 11th or 12th century and a Middle English one in the 1300s.

It was possibly first written at least partially in R'lyehian.

Caligula owns a copy that he uses to pilot Kraken. (EXP: Demonbane) Although it does not appear in the actual series, an official illustration depicts his grimoire as taking the form of a human girl. (similarly to Al Azif, Etheldreda and the R'lyeh Text)

Known Contents[]