is one piece episode 877 filler?

As the Thousand Sunny sails through calm ocean, Sanji finds out that Pedro has died. He is surprised to hear this, and remembers their first encounter on Zou, when the jaguar mink had begged him to save Inuarashi and Nekomamushi from death after Jack's attack.

Carrot tells him to not feel bad, as this is what Pedro wanted and they would not have escape alive without his sacrifice. She then starts sobbing, and Sanji comforts her.

Chopper is tending to Luffy's wounds when cotton candy snow starts falling, which the crew takes as a sign that they are almost out of Totto Land.