A lighthouse becomes a lighthouse.
Once your mind has assigned those meanings, it can become surprisingly difficult to see the same lines in a different way.
That is the trick behind many hidden-image puzzles.
Rather than searching harder for a tiny dog, try changing the way you look at the entire picture.
Step back slightly.
Relax your eyes.
Instead of concentrating on individual details, study the overall shapes and outlines.
Start with the water.
Look carefully at the waves in the foreground and the unusual curves created where the sea meets the ship.
Do any of those lines resemble part of an animal?
Then examine the shoreline and lighthouse.
Pay attention not only to the objects themselves, but also to the empty spaces around them.
Negative space can be especially important in puzzles like this.
Sometimes the hidden image is not drawn directly.
