Are there any differences between "baby" vegetables and their "regular" counterparts
Talking about nutritional value on here can be tricky, because this site about cooking


  Are baby carrots are simply carrots harvested early? Or are they a different kind of carrot, just small?


Yes they are harvested earlier, or even grown more closely. However nowadays they have developed miniature strains which are mature when small in stature. This page contains lot of information about baby carrots, an even a video, so you can try growing this in your garden. 

Baby carrots are not as nutritious as full whole carrots, because a lot of the goodness in carrots is contained in the skin and just below it. This is removed in the baby carrot making process. A pack of baby carrots look more aesthetic and they are more tender/sweeter, that is a selling point.