Gulper eels (Eurypharynx and Saccopharyngidae, Eurypharynx pelecanoides is shown here) are a species of deep sea eel-like fish. Eurypharynx pelecanoides, especially, is known for its ability to expand its mouth to huge (and terrifying) proportions. This is, of course, so that it can catch any prey it comes across.
So here, I have made a life-sized model of the umbrella-mouth gulper (or pelican) eel, Eurypharynx pelecanoides. By life-sized, I mean about 3-4 feet long. The lower jaw is posable, of course, and almost the entire head is hollow, so that LEGO fish pieces can fit inside it. The whole body is also posable, So that the glowing lure at the end of the tail can be brought close to the mouth*.
I think that this would make a terrific set because most people are at least partially fascinated by the deep sea** and its animals. I built this because 1), I was remaking an old model, and 2), because I am absolutely fascinated by the deep sea.
*This is a feature because some gulpers have a bioluminescent lure at the tip of their tail, which they hold close to their head to attract prey to the glow.
**The deep sea starts at 600 feet below the ocean surface.