一个简单的插件，用于防止海豚因脱水和溺水而受到的伤害。
```java
@EventHandler
public void onEntityDamage(EntityDamageEvent event) {
if (event.getEntityType() != EntityType.DOLPHIN) return;
DamageCause cause = event.getCause();
if (cause == DamageCause.DROWNING) event.setCancelled(true);
if (cause == DamageCause.DRYOUT) event.setCancelled(true);
}
```