Most interesting of all was a glancing reference to the strange jewelry vaguely associated with Innsmouth. It had evidently impressed the whole countryside more than a little, for mention was made of specimens in the museum of Miskatonic University at Arkham, and in the display room of the Newburyport Historical Society. The fragmentary descriptions of these things were bald and prosaic, but they hinted to me an undercurrent of persistent strangeness. Something about them seemed so odd and provocative that I could not put them out of my mind, and despite the relative lateness of the hour I resolved to see the local sample - said to be a large, queerly-proportioned thing evidently meant for a tiara - if it could possibly be arranged.
- H.P Lovecraft, The Shadow Over Innsmouth
This nicely done Innsmouth hybrid costume, complete with the distinctive jewelry mentioned in "The Shadow Over Innsmouth, comes to us from Hellequine d'Olt. There's a reason the Deep Ones were able to taint so many bloodlines despite the grotesqueness of late-stage hybrids.
Edit: I showed this to a friend who had a brilliant thought. In a world where the Mythos is real there's a good chance the Deep Ones would target the Furry demographic. "Fishie" art, "Fishie" costumes, "Fishie" conventions...the mind boggles. Legitimize it as a kink community and you would have a never ending supply of converts for the Cult of Dagon.