This next tutorial will show you the location of a beached whale in the game Just Cause 2 for the Xbox 360 and PS3. It won't nab you an achievement or anything, but you'll be able to shoot the whale and eventually blow it up for some little goodies inside.
The whale can be found at X:29613, Y:31333. Once there, you can do whatever you want with it, including blow it up. It's easy to do and will result in a small little prize. So good luck and enjoy!