The colourful reefs around the former pirate island of Coralia provide a paradise for scientists from all over the world who explore the underwater world with their diving robots and work on the preservation of the coral reefs. They send their ROVs (Remotely Operated Vehicles) into the depths of the sea in order to find certain species. Moreover, they also keep their eyes open in case they can find a sunken pirate's treasure or two. A few pearls would be welcome, too, so that they won't be just a renowned explorer in the end, but also a wealthy one ... In this dice-placement game, each player tries to make the most points with a bit of luck and the right decisions – an adventure for the entire family.