09/16/2011 at 04:50 PM EDT
On her wedding day
, Kim Kardashian
was beaming, but a few months before, she wasn't looking so thrilled.
The reality star took a trip to Bora Bora in May with her family and now-husband Kris Humphries, and they had an experience swimming with sharks and stingrays in the Pacific Ocean that made Kardashian hold on for dear life.
"Swimming with stingrays and sharks seems so scary but they bring people out here a dozen times a day, so we knew it was safe," she wrote on her Celebuzz blog
. "Still, we were all really scared ... You can see the look of fear on all of our faces!"
While Kardashian was intimidated by the animal natives of French Polynesia, her brother Rob seemed to be enjoying himself, hanging off their boat. If she had to do that, Kardashian wrote, "I would die of fear!"