I generated a map seed that I really don't want to have to throw away.  Unfortunetly people keep spawning under the dang map and drowing.  Is there anything I can do to save this map??

is it when they are tping or just normal spawn?

When you first log in you spawn on the beach.  If you get killed before you set a bedroll you then you respawn under the map in the ocean drowning with no way to get to the surface.  I don't have any mods or anything.  Is there something that can save my map?  I really don't want to generate a new map.  The one I have is beautful.

tou could download a plugin that controls spawn points https://umod.org/plugins/custom-spawn-points