Oh god, this one is really really bad. Just to explain what she says in the japanese version, she was supposed to say that the sea was enjoyable (tanoshii), but she replaced the shii part with the sea, which sounds similar in japanese, making a terrible pun with it.

I would personally have gone for something like "umizing" since it's meant to be a translingual pun.

In fact, I'm actually gonna change it to precisely that.

"The inner machinations of her mind are an enigma"

It's literally just puns 24/7