Playmobil 71420 Treasure hunt

In the darkness of the underwater cave, the markings on the rocks guide the pirate to the hiding place of the crystal skull artifact. He pushes aside the spider web and uncovers the treasure. But beware: an eel-like creature surfaces from the water and attacks the pirate. Can he be driven away with the help of the cannon? Includes glow-in-the-dark rock prints.