===================================================================
--- original.js
+++ change.js
@@ -79,30 +79,34 @@
 	};
 	LK.setInterval(self.releaseFood, 10000);
 	return self;
 });
-var Bubble = Container.expand(function () {
-	var self = Container.call(this);
-	self.liftSpeed = 3;
-	self.on('tick', function () {
-		self.y -= self.liftSpeed;
-		if (self.y < 0) {
-			self.destroy();
-		}
-	});
+var CapturingBubble = Bubble.expand(function () {
+	var self = Bubble.call(this) || this;
 	self.captureFish = function (fish) {
-		if (!fish.isCaptured && self.intersects(fish)) {
+		if (fish instanceof Fish && !fish.isCaptured && self.intersects(fish)) {
 			fish.isCaptured = true;
 			fish.x = self.x;
 			fish.y = self.y - fish.height / 2;
+			fish.alpha = 0.5;
 		}
 	};
 	self.releaseFish = function (fish) {
 		if (fish.isCaptured) {
 			fish.isCaptured = false;
 			fish.y += fish.height / 2;
+			fish.alpha = 1.0;
 		}
 	};
+	self.on('tick', function () {
+		self.y -= self.liftSpeed;
+		if (self.y < 0) {
+			if (fish.isCaptured) {
+				self.releaseFish(fish);
+			}
+			self.destroy();
+		}
+	});
 	return self;
 });
 var BubbleProducingFish = Container.expand(function () {
 	var self = Container.call(this);
@@ -432,25 +436,20 @@
 var InteractiveDecoration = InteractiveElement.expand(function () {
 	var self = InteractiveElement.call(this) || this;
 	self.interactWithFish = function (fish) {};
 });
-var DecorativePlant = Container.expand(function () {
-	var self = Container.call(this);
-	self.growthRate = 0.02;
-	self.nutritionValue = 10;
-	self.healthValue = 5;
-	var plantGraphics = self.createAsset('decorativePlant', 'Decorative Plant Graphics', 0.5, 1);
+var GrowingPlant = DecorativePlant.expand(function () {
+	var self = DecorativePlant.call(this) || this;
+	self.growthRate = 0.01;
+	self.maxScale = 5;
 	self.on('tick', function () {
-		plantGraphics.scale.x += self.growthRate;
-		plantGraphics.scale.y += self.growthRate;
-		if (plantGraphics.scale.x > 4) {
-			plantGraphics.scale.x = 4;
-			plantGraphics.scale.y = 4;
+		if (self.scale.x < self.maxScale) {
+			self.scale.x += self.growthRate;
+			self.scale.y += self.growthRate;
 		}
 	});
 	self.consume = function (fish) {
-		if (self.distanceTo(fish) < 100) {
-			fish.hunger = Math.min(fish.hunger + self.nutritionValue, 100);
+		if (fish instanceof Fish && self.distanceTo(fish) < 100) {
 			fish.health = Math.min(fish.health + self.healthValue, 100);
 			self.destroy();
 		}
 	};
@@ -524,10 +523,20 @@
 	self.on('tick', function () {
 		self.move();
 	});
 });
-var Food = Container.expand(function () {
-	var self = Container.call(this);
+var SpeedyFood = Food.expand(function () {
+	var self = Food.call(this) || this;
+	self.nutrition = 10;
+	self.speedBoost = 1.5;
+	self.boostDuration = 5000;
+	self.consume = function (fish) {
+		if (fish instanceof Fish) {
+			fish.increaseSpeed(self.speedBoost, self.boostDuration);
+		}
+		Food.prototype.consume.call(this, fish);
+	};
+	return self;
 });
 var SmartFood = Food.expand(function () {
 	var self = Food.call(this) || this;
 	self.nutrition = 20;
@@ -646,9 +655,9 @@
 	};
 	return self;
 });
 var PredatorFish = Fish.expand(function () {
-	var self = Fish.call(this);
+	var self = Fish.call(this) || this;
 	self.predatorGraphics = self.createAsset('predatorFish', 'Predator Fish Graphics', 0.5, 0.5);
 	self.speed = 3;
 	self.huntRange = 300;
 	self.hunt = function () {