Kendall Jenner, Hailey Baldwin, Bella Hadid and a bunch of their model friends are all into sharing ... jet skis in their bikinis ... but you won't be able to find them.
Kendall and the gang posted a ton of hot pics Tuesday of themselves on a tropical beach, where they're having loads of fun showering on a boat ... and getting cozy aboard a couple jet skis.
We're not sure where the hell they are. One thing's for sure ... we like what we see from afar.