National Geographic Magazine @ nationalgeographic.com

For the next four weeks we’ll turn your desktop into an Aussie aquarium.
See more from the Great Barrier Reef.

Week 1

TURTLE TAKE OFF
Green turtles often journey hundreds of miles to breed on the islands where they hatched.

Photograph by David Doubilet

Click your monitor size to download image:
- 15 inches (38 centimeters) or smaller
- 15 inches (38 centimeters) or larger

Week 2

NO CLOWNING AROUND
It’s hard to tell male from female with the clown anemonefish. In a social group, when the dominant female dies, the male of the pair takes charge by changing sex.

Photograph by David Doubilet

Click your monitor size to download image:
- 15 inches (38 centimeters) or smaller
- 15 inches (38 centimeters) or larger

Week 3

OFFSHORE PARADISE
Layer upon layer of life thrives on Australia’s Great Barrier Reef.

Photograph by David Doubilet

Click your monitor size to download image:
- 15 inches (38 centimeters) or smaller
- 15 inches (38 centimeters) or larger

Week 4

SHARK!
No need to make waves. Whitetip sharks like this pair tend to be more curious than aggressive.

Photograph by David Doubilet

Click your monitor size to download image:
- 15 inches (38 centimeters) or smaller
- 15 inches (38 centimeters) or larger

For Windows 95 or Higher

1. Determine which size is appropriate for your monitor.

2. Click the size you wish to download.

3. After the image appears in your browser, click the right-hand button on your mouse.

4. On the menu that pops up, select SET AS WALLPAPER

For Macintosh

1. Determine which image size is appropriate for your monitor.

2. Click the size you wish to download.

3. After it appears in your browser, drag the image onto your desktop.

4. From the Apple Menu (at the top left of your screen) select CONTROL PANELS, then DESKTOP PICTURES or APPEARANCE. (If the new window reads APPEARANCE, select the tab that reads DESKTOP.)

5. If necessary, click REMOVE PICTURE to clear the current desktop picture.

6. Click SELECT PICTURE or PLACE PICTURE, then locate and click the image file.

7. Click OK or CHOOSE.

8. Finally, click SET DESKTOP.