Kadrmas45

I have a custom world I have made which is mainly water. When I fight a dragon in this world the dragon kind of dives at people, and goes underwater. As cool as it sounds, it doesn't look right. Anyone know how to fix this? Also, can dragons only die when they hit solid ground? it seemed like the dragon was continuously circling the boat with no health as if it were looking for a place to land and die. Any help is appreciated!