(Angler) Illuminant Ichthyoid

Lore
The mind-boggling size of this sea creature make sharks, humans, and even whales appear to be little more than krill. The hulls of even the biggest ships are reduced to splinters by his massive teeth. The humans who live on the small islands that dot its ocean habitat fear quivering lights in the waters, knowing them to be omens of disaster brought about by this gargantuan predator.

Acquisition
?

Name origin
?