is one piece episode 609 filler?

In the research room, the guard is shocked when hearing that a kid turned into a dragon and asks the little girl where she saw it; she says she peeked into the Secret Room and kept it to herself and is now worried for Momonosuke. The guard lies, saying he is fine and that she does not need to worry about him and that he is eating, and tells the little girl she must not tell anyone else what she saw.

In Caesar's lab, Luffy asks what Monet is doing, and she makes a ten layer snow hut.