You noticed an Urzuk near the oasis collecting seashells I guess the Urzuk was making an collection of seashells pretty odd.. oh right i didn't mention the Urzuk did it in the middle of the night not every Urzuk is behaving like this one..

the Uruzk finally noticed you and said "Ah! Ehm... who are you?" The Urzuk had a high pitched voice wich is kinda annoying but you should ignore it.