Don't be taking them to the ocean in Florida. Now if you want to go to fiji or hawaii,,,,
If they are very very small, you "can" get away with it for a year or so. But if you have no intention of going with a larger tank, don't do it. You're probably good for up to 3 inches, maybe 4 inches in size. LFS's will take them but they'll just sell them to someone else with too small of a tank so I don't know that's really ethical either. Best bet, bigger tank or a friend that has a big tank.