An optical illusion has confused social media users, as it claims to be seeing different species of animals.

Initially claimed that this picture, can help you understand the two sides of your brain and which part is more dominant, reports Telegrafi.

If you see the fish, it means that the right side dominates, but if you see the mermaid - the dominant is the left side.

However the picture has gone viral, as most people see a completely different animal.

Comedian David Baddiel said it apparently is about a donkey.

And his colleague Jonathan Ross disagreed with him.

"It's about a thick seal lying down - you are a donkey," he wrote with a joke.

/ Telegraphy /