Filler: The beginning of the end of the Island Arc.
Foreshadowing: The interior of Red Noah contains Nautilus-style ships, building on the hints that Nemo's vessel was a converted spacecraft.
Prince Charming Wannabe: Ayerton tries to seduce Grandis by taking her aboard the Gratan, but she rejects his advances (with backup from Hanson and Sanson).
Sand Necktie: Ayerton is subjected to this after Sanson and Hanson find him attempting to seduce Grandis. Adding to his humiliation, King also urinates on Ayerton.