An anonymous artist dubbed the 'Banks of the beach' is making waves in Wales.
Locals and tourists have been snapping pictures of his huge designs on Gower beaches and sharing them on social media.
Many have been left scratching their heads, wondering what the meaning behind them is.
Speaking to the South Wales Evening Post, the mystery artist said: "One down at Rhossili, when I went back up to the top of the hill to take a few photos, people were asking 'what's the message' and 'are you signalling UFOs?'.
"It's quite good really especially all of the hype around it and it's good to get people talking and wondering about what it's all about."
But, apparently, there's no such mystery behind the sand sketches. The 'sandman' said he was inspired after seeing somebody creating beach images in Cornwall.
He explained: "I thought why not give it a go and see what happens.
"It's quite relaxing spending a couple of hours wandering around in circles. People come up and ask what I'm doing, and I just say 'I don't know, but it's better than sitting playing on a games console'."
According to theMirror, he added: "Anybody can pick up a rake and do it.
"It's like kids sticking their finger in the sand and drawing, just on a larger and more precise scale."