[Thash didn't seem to notice or care he was being watched, but when they came to the railing and Yasaburo started to change, Thash watched him intently, finding it fascinating. He dove in as well, meeting the tanuki under water]

Whoa... I've been in a lot of bodies of water and seen a ton of aquatic life...and I don't think I've ever seen a fish like that. [interestingly, his voice could be heard very clearly underwater unlike the muffled, unclear speech that would come from a human in such a place] whatever it is, it's pretty cool... So let's see if we can find some fish.

[he turned and started swimming, his motion underwater completely different from how he moved on land. He didn't use his arms or legs much, and his tail seemed to push him through the water almost effortlessly]