diff --git a/patches/server/0255-Dolphins-naturally-aggressive-to-players-chance.patch b/patches/server/0255-Dolphins-naturally-aggressive-to-players-chance.patch
new file mode 100644
index 000000000..9f89182eb
--- /dev/null
+++ b/patches/server/0255-Dolphins-naturally-aggressive-to-players-chance.patch
@@ -0,0 +1,68 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <blake.galbreath@gmail.com>
+Date: Mon, 30 Aug 2021 22:14:39 -0500
+Subject: [PATCH] Dolphins naturally aggressive to players chance
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+index 2aead13e8f879b614445715fb1912a20b9abf4b9..a33724bee284c3f05b1807d6564ddf1564278167 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
++++ b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+@@ -85,6 +85,7 @@ public class Dolphin extends WaterAnimal {
+         return !entityitem.hasPickUpDelay() && entityitem.isAlive() && entityitem.isInWater();
+     };
+     private int spitCooldown; // Purpur
++    private boolean isNaturallyAggressiveToPlayers; // Purpur
+ 
+     public Dolphin(EntityType<? extends Dolphin> type, Level world) {
+         super(type, world);
+@@ -170,6 +171,7 @@ public class Dolphin extends WaterAnimal {
+     public SpawnGroupData finalizeSpawn(ServerLevelAccessor world, DifficultyInstance difficulty, MobSpawnType spawnReason, @Nullable SpawnGroupData entityData, @Nullable CompoundTag entityNbt) {
+         this.setAirSupply(this.getMaxAirSupply());
+         this.setXRot(0.0F);
++        this.isNaturallyAggressiveToPlayers = level.purpurConfig.dolphinNaturallyAggressiveToPlayersChance > 0.0D && random.nextDouble() <= level.purpurConfig.dolphinNaturallyAggressiveToPlayersChance; // Purpur
+         return super.finalizeSpawn(world, difficulty, spawnReason, entityData, entityNbt);
+     }
+ 
+@@ -240,18 +242,20 @@ public class Dolphin extends WaterAnimal {
+         this.goalSelector.addGoal(0, new BreathAirGoal(this));
+         this.goalSelector.addGoal(0, new TryFindWaterGoal(this));
+         this.goalSelector.addGoal(0, new net.pl3x.purpur.entity.ai.HasRider(this)); // Purpur
++        this.goalSelector.addGoal(1, new MeleeAttackGoal(this, 1.2000000476837158D, true)); // Purpur
+         this.goalSelector.addGoal(1, new Dolphin.DolphinSwimToTreasureGoal(this));
+         this.goalSelector.addGoal(2, new Dolphin.DolphinSwimWithPlayerGoal(this, 4.0D));
+         this.goalSelector.addGoal(4, new RandomSwimmingGoal(this, 1.0D, 10));
+         this.goalSelector.addGoal(4, new RandomLookAroundGoal(this));
+         this.goalSelector.addGoal(5, new LookAtPlayerGoal(this, Player.class, 6.0F));
+         this.goalSelector.addGoal(5, new DolphinJumpGoal(this, 10));
+-        this.goalSelector.addGoal(6, new MeleeAttackGoal(this, 1.2000000476837158D, true));
++        //this.goalSelector.addGoal(6, new MeleeAttackGoal(this, 1.2000000476837158D, true)); // Purpur - moved up
+         this.goalSelector.addGoal(8, new Dolphin.PlayWithItemsGoal());
+         this.goalSelector.addGoal(8, new FollowBoatGoal(this));
+         this.goalSelector.addGoal(9, new AvoidEntityGoal<>(this, Guardian.class, 8.0F, 1.0D, 1.0D));
+         this.targetSelector.addGoal(0, new net.pl3x.purpur.entity.ai.HasRider(this)); // Purpur
+         this.targetSelector.addGoal(1, (new HurtByTargetGoal(this, new Class[]{Guardian.class})).setAlertOthers(new Class[0])); // CraftBukkit - decompile error
++        this.targetSelector.addGoal(2, new net.minecraft.world.entity.ai.goal.target.NearestAttackableTargetGoal<>(this, Player.class, 10, true, false, target -> isNaturallyAggressiveToPlayers)); // Purpur
+     }
+ 
+     public static AttributeSupplier.Builder createAttributes() {
+diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+index 258bd55eb334d1e841e7ecbf77da985f5b7278c4..da9d2abf91b16c3b98ad8b1ab65b39b5e693e8e0 100644
+--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
++++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+@@ -1186,6 +1186,7 @@ public class PurpurWorldConfig {
+     public float dolphinSpitDamage = 2.0F;
+     public double dolphinMaxHealth = 10.0D;
+     public boolean dolphinDisableTreasureSearching = false;
++    public double dolphinNaturallyAggressiveToPlayersChance = 0.0D;
+     private void dolphinSettings() {
+         dolphinRidable = getBoolean("mobs.dolphin.ridable", dolphinRidable);
+         dolphinSpitCooldown = getInt("mobs.dolphin.spit.cooldown", dolphinSpitCooldown);
+@@ -1198,6 +1199,7 @@ public class PurpurWorldConfig {
+         }
+         dolphinMaxHealth = getDouble("mobs.dolphin.attributes.max_health", dolphinMaxHealth);
+         dolphinDisableTreasureSearching = getBoolean("mobs.dolphin.disable-treasure-searching", dolphinDisableTreasureSearching);
++        dolphinNaturallyAggressiveToPlayersChance = getDouble("mobs.dolphin.naturally-aggressive-to-players-chance", dolphinNaturallyAggressiveToPlayersChance);
+     }
+ 
+     public boolean donkeyRidableInWater = false;