On a restaurant wall! What do you think it is, and any guesses to what I was told it was?

I used to live in a lovely place called

Shekou

which is in Shenzhen China

and in the very popular "Sea World"

there is a restaurant with what you see in this photo, on the wall!

As you can see in the photo, there were people eating next to it

and I just had to ask

"What it was meant to be?"

What do you think it looks like?

And

Any guesses to what I was told?