A lot of parents enjoy that their toddlers are not able to run off and that they can still comfortably wear their 5 - year - old on their back without the normal strain that most parents deal with when giving piggyback rides. (babycarrierreviewguide.com)
Another Dinner Feast piggyback riding on the first, see? (levanacooks.com)
Though there are other underwater hitchhikers such as remora fish, which latch on to sharks, this is the only ray known to like piggyback rides. (newscientist.com)