Visting Merpeople and diving for pearls? Katherine looked at him trying to imagine it. "I've been to Crete," she said. "Fun enough but I prefer Athens, though not when it's too hot because then you simply can't breathe. And while the bazaar sound interesting enough and I certainly like pearls, why would I want to dive for them myself when others can do it for me?" she asked. "I do like the idea of designing my own jewellery though. That would be lovely."
There were cities in Hawaii, perhaps she could visit and get the house elf to dive for pearls that she then turned into a necklace and wore while going out dancing? That wouldn't be too bad.