You've really had some grand adventures.
I've been fascinated by these strange atolls since reading An Island to Oneself. It's the story of Tom Neale who fulfilled his life's ambition of giving up civilization and living completely alone on the atoll of Suwarrow for several decades. Although if I remember correctly he got quite sick at one point and was rescued by the lucky passage of a ship like yours. He had to fight the New Zealand government pretty hard for the right to go back.
(Actually the entire text of the book is available online here.)
I hope we won't lose these atolls to rising sea-levels. They're just fascinating.
Thank you for the pointer to the book from Tom Neale.