User blog comment:BannedLagiacrus/Discussion of the Week: New World/@comment-5020152-20160521142315/@comment-26421638-20160522091838

@ Blazing Black Dragon I've beat Amatsu a couple of times Back in MHP3rd (One of my Favorite ED), so i've listened very well its sounds... Yeah, the noises sound like a mix between a whale and also a crying person...

I've simply misunderstood, I tought that he nicknamed Amatsu "sky whale" for its design rather than for its sounds... That's it.