The Barnacle Arch has grass on it.
Barnacle Arch is a large natural sea arch in the ocean near Wuhu Island. It is an iPoint in Wii Sports Resort's Island Flyover. There is a smaller sea arch look alike called Gateway to Wuhu as well. However, it is fairly easy to tell the difference, as Barnacle Arch has grass on top.
Trivia
Island Flyover Information:
- Daytime: “This sea arch is just begging for someone to fly under it…”
- Evening: “There’s another arch like this one around Wuhu Island.”
- Night: “At night, this arch looks a little like a pair of rocky pants…”