Horizon International has launched its Magic Porthole coral reef playing cards with photographic mirror-images of coral reef creatures.

Each of the 52 card backs features a design with five creatures of the reef: grouper, boxing crab, clownfish, emperor fish, and moray eel. They’re artistically rendered by Sasha Meret. These “First Collector’s Edition” cards also feature photographs by Jan Post in mirrored designs by Sasha Meret along with joker photographs by Captain Tim Taylor.

One version of the cards has all the same backs so they can be used to play favorite card games. The other version has backs with information about the species so they can be used for memory games and flash cards.