Once hatched, the active Plesiodragon hatchling heads towards the water where they quickly start exploring under the protective watch of their parents, their curiosity never gets out of hand as they are always careful in their explorations, yet they often need their parents to remind them when to rise from the depths for air, as the youngsters can quickly tire when swimming long distances and need a little encouragement to the surface sometimes. They can quickly become anxious if they cannot see at one of their parents close by, making a high pitched sound to call out to them. The breeds characteristic frills along the back are still to develop.