anchor.diff:  
   void main() {
     school = [];
  -  count = querySelector('#count');
  -  count.text = school.length.toString();
  +  count = querySelector('#count')
  +    ..text = school.length.toString()
  +    ..onClick.listen((e) {
  +      window.location.href =
  +          'https://upload.wikimedia.org/wikipedia/commons/c/c3/Bludger_(fish).png';
  +    });
   
     // Set the bait the current mouse location
     document.onMouseMove.listen((MouseEvent e) {
  
positive.code:     ..classes.add('abs')
      ..src = "media/fish_right.png"
      ..style.left = '${x}px'
      ..style.top = '${y}px'
      ..onClick.listen((e) {
        window.location.href =
            'https://upload.wikimedia.org/wikipedia/commons/c/c3/Bludger_(fish).png';
      });
    document.body.querySelector('#sea').children.add(fish);
    Fish egg = new Fish(
        fish,
  
negative.code: 
    document.onTouchMove.listen((TouchEvent e) {
      List<Touch> points = e.touches.toList();
      if (points.length > 0) {
        mouseX = points.last.client.x;
        mouseY = points.last.client.y;
        school.forEach((Fish fish) => fish.setBait(mouseX, mouseY));
  