Skyshard is found in the middle of a lake. Its journal tip “Ejected from the Village” comes from a nearby dungeon. This dungeon is called Village of the Lost. This makes two shards in total for this tiny part of the map. Standing on top of a shard location you can have a clear view of the dungeon’s portal entrance.
Eastern Coldharbour, northeast of Everfull Flagon Wayshrine, close to a nearby entrance to dungeon Village of the Lost.