Each Uisge Earballach

Hydro Equus Extendus
Long-Tailed Water Horse
"This is the only known example of this rare beast - a distant relative of the better-known Monstra Nessium. Hydro E E is usually sighted only twice a year when it swims inshore to browse on whelks. This specimen was stranded at an exceptionally low tide in 1967."