is one piece episode 754 filler?

Luffy races through the abandoned Kurau City, looking for Sanji, Nami, Chopper, Brook, Momonosuke, and Caesar Clown. He then enters the Whale Forest, and is awestruck at the giant tree shaped like a whale in the center.

Luffy traverses through the trees, but he is unknowingly being watched by a mink named Pedro. Meanwhile, a canine mink named Wanda stops her fellow mink Carrot from attacking the Straw Hats, saying that they need to deal with an intruder in the Whale Forest.