It might seem like dinosaur bones, but look closer - it's all carved out of sand!
It's one of lots of creations at Sandworld in Weymouth, Dorset.
Each of these huge masterpieces took 10 days to carve.
Weymouth beach sand is very fine and the sand sculptors working on these creations think it's the best beach sand in the world.
These pirates were made by American Brad Goll who's been sand sculpting professionally for over 30 years!
The sand has to be prepared first by mixing it with water and then compacting it together - it's then ready for some serious sculpting action!
Preparation took between one and three days for each of these creations. It's really important that it's done right to make sure the sculptures stay strong and don't crumble away!
Karen Fralich, who made this piece, started sculpting when she was just 14 years old.
This underwater scene was made with 100 tons of sand - that's the weight of about 11 big elephants!