Have you ever wanted to be something other than human? Mermaids, half human, half fish, are one of the most amazing mythical creatures. Best known for sitting on rocks, singing, combing their long, blonde, beautiful hair. Their tail's color is based on the mermaid's personality, and reflects their true feelings. Pretty cool, huh?
Every baby is different, but most will roll over at an age between 4 months and 6 months. Rolling from front to back can be done just by kicking, which babies are pretty good at by that age, but going from back to front requires a little more upper-body (neck, arm, etc) muscle development.
What to do if your baby doesn't roll over. If your baby hasn't figured out how to flip one way or the other by the time he's about 6 months old, and hasn't moved on to sit and try to scoot and crawl instead, bring it up the next time you talk to his doctor.