Can someone help to understand on how to do this animation

Support Animation and Rigging
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1

I need to know this urgently, kindly me out.

2

Did you mean to add a link or an image?

3

Hi, thank you for replying back… I need to know the process of this animation and I actually don’t understand how he made the whale go between the building. I was looking for this type tutorials but unfortunately I couldn’t find on.