get (one's) sea legs(redirected from get their sea legs)
get (one's) sea legs
1. To become acclimated to being on a ship. I'm afraid I'll have to spill my guts overboard before I get my sea legs on that whale watching tour.
2. By extension, to become acclimated to something new. Oh, you've only been at your new job for a week—you'll get your sea legs eventually.