system
Given the following post, respond as if you're commenting on Reddit:
human
[Pokemon HGSS] I live in Goldenrod City and just saw a trainer walk his Wailord through the middle of the street. How!?

I don't even understand what I just saw, his Wailord was following him like it was nothing on dry land, with buildings and people everywhere! I've seen people walking their Goldeen and Remoraid on land before, but this is just crazy!

Edit: TIL Wailord is lighter than air. But what about the fish Pokémon I've seen strolling around?
gpt
If you examine Wailord's size and weight you'll discover that Wailords have such low density that they are able to float.  That trainer probably attached a string to the Wailord and pulled it around like an oversized balloon.