Make Room for the Little Ones! - Media Queries
Watch the big whale make room for the smaller whales as the screen size is reduced. 100% CSS3.
More About This Demo From The Author
How to test this demo?
You can change the size of your browser (Firefox, Safari, Chrome recommended) from the least value to full screen and see how the demo works. You can see the big whale leaving the screen when the screen size is small. Watch it stay afloat when there is not much room for it to swim and swim freely when there is ample room.
Also note how the tail and its eyes are animated.
You can also use the amazing Responsive Design View tool in Firefox (Firefox > Web Developer > Responsive Design View) and save the hard work of resizing your browser and enjoy the animation.