Responsive image gallery with unique URL per image?
Give a try to Flexislider module:


  Flex Slider module integrates the Flex Slider library with Drupal and several contributed modules which allows you to build responsive, resizable slideshows. Meaning the slideshows automatically adapt to the size of the browser window or device.


Some features of FlexSlider slideshows include:


Touch enabled nagivation
Keyboard navigation
Configurable slide animations
Multiple sliders per page


Demo available here: http://www.woothemes.com/flexslider


  Library available at: https://github.com/woothemes/FlexSlider


And as far as the unique URL per panel thing is concerned I guess that depends upon how you creating the structure for slider, i.e while creating the structure for slider you can define the unique id attribute for each li as following:

&lt;div class="flexslider"&gt;
  &lt;ul class="slides"&gt;
    &lt;li id="UNIQUE-ID1"&gt;
      &lt;img src="slide1.jpg" /&gt;
    &lt;/li&gt;
    &lt;li id="UNIQUE-ID2"&gt;
      &lt;img src="slide2.jpg" /&gt;
    &lt;/li&gt;
    &lt;li id="UNIQUE-ID3"&gt;
      &lt;img src="slide3.jpg" /&gt;
    &lt;/li&gt;
  &lt;/ul&gt;
&lt;/div&gt;





  Drupal also have the royalslider library integration which integrates the royal slider library