Oh the innuendos, Oda you
Well that was quite the jam packed chapter, even if nothing huge or action like happened, alot of info and build up.
I love Madam Shirley's design, she's big and beautiful(you don't really get to say that much
)
I'm guessing Van Der Decken will have something to do with the destroying of the Island. Something like Luffy is mistaken as the one destroying but it's actually Van Der Decken, the wanted poster had a hat similar to Luffys so maybe thats where the confusion comes in.
On the note with Caribou, I think it would be rather fitting or inline with OP: Strong World, if Brook is the one to save the mermaids instead of Sanji, last second save