Revert initialize.

src/engine/objects/Zone.java

@@ -57,7 +57,7 @@ public class Zone extends AbstractGameObject {
     private boolean isPlayerCity = false;
     private String hash;
     public float worldAltitude = 0;
-    private float seaLevel = MBServerStatics.SEA_FLOOR_ALTITUDE;
+    private float seaLevel = 0f;
     public static final Set<Mob> respawnQue = Collections.newSetFromMap(new ConcurrentHashMap<>());
     public static long lastRespawn = 0;
     /**