The gregarious ulmodili lived in hierarchical groups of 10-200 individuals, which in turn joined to form schools of 100-2000 creatures. Playful and agile, they rolled and leaped along the surface of the open sea, moving at speeds of up to 40 miles an hour. When they submerged, they could dive as deep as 1000 feet and stay down for as long as five minutes before they needed to resurface (they breathed through lungs, not gills).
An ulmodil had smooth blue (top) and white (bottom) skin and a long beaked snout. This snout was a formidable, mace-like weapon that contained an array of short, sharp teeth. Its bulging forehead encased a pad of fat that housed a sonar-like organ that enabled the creature to detect objects with stunning accuracy.
- Retrieved from [Realms of Arda]; original reference: [ICE MERP 2012]