Arthur was quite literally a fish out of water

"Wow..." he marveled at the festivities going on around him. Such a wide range of people and things going on around him, it was almost overwhelming. "I...I don't even know where to start" he admitted to himself

Having gotten human legs not too long ago, Arthur was still adjusting. For example; having his movement limited to mostly to two dimensions was a pretty big one. Underwater, going up and down was as easy as left and right. So easy in fact, that he sometimes forgot about the new limitation to his mobility. This led to more then a few moments of him falling flat on his face when gravity reminded him

Also, pants. Hell, clothes in general took a lot of getting used to. Back home, Mermen going nude was the norm. Thanks to their tails hiding their...um...well...you know what I mean. Even though he no longer forgot to get dressed anymore, that didn't mean that he liked the feeling of clothes on his body, it just felt so weird after having gone his whole life in his birthday suit. He however, outright refuse to wear underwear. He understood the need for pants to cover up his...you know what, he saw them as redundant, especially since he wasn't supposed to wear only them in public

Changes aside, Arthur found himself thoroughly enjoying himself on land. He was able to see and experience so many new things up here. It was truly a treat