Stellar sea cow

From gronkfinder

Stellar sea cows are common sights on the coastline of the Phiora Sea near Sciath Bay. Massive sea-dwelling mammals, these creatures can grow up to thirty feet long. These sea cows acquired their name from the spectacled, constellation-like patterns on their tough outer hides. These patterns seem to shift as the sea cows travel, apparently reflecting the status of the night sky at their location. When the animal dies, the patterns stop changing, providing a permanent indication of where the creature met its end. Traditionally, some sailors believe it is possible to navigate by using the stellar sea cow hides as star charts.