===================================================================
--- original.js
+++ change.js
@@ -396,11 +396,12 @@
 });
 var HealingPlant = Container.expand(function () {
 	var self = Container.call(this);
 	var plantGraphics = self.createAsset('healingPlant', 'Healing Plant Graphics', 0.5, 1);
-	self.healingRate = 0.05;
+	self.healingRate = 0.1;
+	self.healingRange = 100;
 	self.on('tick', function () {
-		var nearbyFish = self.getNearbyFishWithinRange(50);
+		var nearbyFish = self.getNearbyFishWithinRange(self.healingRange);
 		nearbyFish.forEach(function (fish) {
 			if (fish.health < 100) {
 				fish.health = Math.min(fish.health + self.healingRate, 100);
 			}
@@ -411,20 +412,42 @@
 var TreasureChest = InteractiveElement.expand(function () {
 	var self = InteractiveElement.call(this) || this;
 	var chestGraphics = self.createAsset('treasureChest', 'Treasure Chest Graphics', 0.5, 0.5);
 	self.isOpen = false;
+	self.coinReleaseRate = 3;
+	self.releaseCoins = function () {
+		if (self.isOpen) {
+			for (var i = 0; i < self.coinReleaseRate; i++) {
+				var coin = new Coin();
+				coin.x = self.x;
+				coin.y = self.y;
+				LK.stageContainer.addChild(coin);
+			}
+		}
+	};
 	self.interact = function () {
 		self.isOpen = !self.isOpen;
 		chestGraphics.texture = LK.getAsset(self.isOpen ? 'chestOpen' : 'chestClosed', 'Chest Graphics', 0.5, 0.5).texture;
-		if (self.isOpen) {
-			var bubble = new Bubble();
-			bubble.x = self.x;
-			bubble.y = self.y;
-			LK.stageContainer.addChild(bubble);
-		}
+		self.releaseCoins();
 	};
 	LK.setInterval(self.performInteraction, 10000);
+	return self;
 });
+var Coin = Container.expand(function () {
+	var self = Container.call(this);
+	var coinGraphics = self.createAsset('coin', 'Coin Graphics', 0.5, 0.5);
+	self.value = 1;
+	self.collect = function (fish) {
+		if (self.intersects(fish)) {
+			LK.setScore(LK.getScore() + self.value);
+			self.destroy();
+		}
+	};
+	self.on('tick', function () {
+		self.collect(fish);
+	});
+	return self;
+});
 var Algae = Container.expand(function () {
 	var self = Container.call(this);
 	var algaeGraphics = self.createAsset('algae', 'Algae Graphics', 0.5, 1);
 	self.growthRate = 0.01;
@@ -581,25 +604,31 @@
 });
 var PredatorFish = Fish.expand(function () {
 	var self = Fish.call(this);
 	self.predatorGraphics = self.createAsset('predatorFish', 'Predator Fish Graphics', 0.5, 0.5);
-	self.speed = 2;
-	self.huntRange = 200;
-	self.on('tick', function () {
+	self.speed = 3;
+	self.huntRange = 300;
+	self.hunt = function () {
 		var nearbyPrey = self.getNearbyFish().filter(function (fish) {
 			return fish.size < self.size && fish.health > 0;
 		});
 		if (nearbyPrey.length > 0) {
 			var prey = nearbyPrey[0];
+			for (var i = 1; i < nearbyPrey.length; i++) {
+				if (self.distanceTo(nearbyPrey[i]) < self.distanceTo(prey)) {
+					prey = nearbyPrey[i];
+				}
+			}
 			if (self.distanceTo(prey) < self.huntRange) {
 				self.targetRotation = Math.atan2(prey.y - self.y, prey.x - self.x);
-				prey.health -= 1;
+				prey.health -= 2;
 				if (prey.health <= 0) {
 					prey.destroy();
 				}
 			}
 		}
-	});
+	};
+	self.on('tick', self.hunt);
 	return self;
 });
 var RestingBehavior = Container.expand(function () {
 	var self = Container.call(this);
@@ -1542,14 +1571,14 @@
 		}
 		return fishes;
 	};
 });
-var IntelligentFish = Fish.expand(function () {
+var SmartFish = Fish.expand(function () {
 	var self = Fish.call(this) || this;
-	self.intelligenceLevel = 5;
+	self.intelligenceLevel = 10;
 	self.avoidPredators = function () {
 		var predators = self.getNearbyFish().filter(function (otherFish) {
-			return otherFish.size > self.size && self.distanceTo(otherFish) < 200;
+			return otherFish.size > self.size && self.distanceTo(otherFish) < 300;
 		});
 		if (predators.length > 0) {
 			var escapeVector = {
 				x: 0,
@@ -1567,11 +1596,14 @@
 		var foodSources = self.getNearbyObjects().filter(function (obj) {
 			return obj instanceof Food;
 		});
 		if (foodSources.length > 0) {
-			var closestFood = foodSources.reduce(function (closest, food) {
-				return self.distanceTo(food) < self.distanceTo(closest) ? food : closest;
-			}, foodSources[0]);
+			var closestFood = foodSources[0];
+			for (var i = 1; i < foodSources.length; i++) {
+				if (self.distanceTo(foodSources[i]) < self.distanceTo(closestFood)) {
+					closestFood = foodSources[i];
+				}
+			}
 			self.targetRotation = Math.atan2(closestFood.y - self.y, closestFood.x - self.x);
 		}
 	};
 	return self;