Hello, I'm Pororo! My friends and I decided to go on a trip to the bottom of the sea in a submarine that Eddy made. The bottom of the sea is full of various fish friends, beautiful corals, and seaweed! Moreover, near the 'Seaweed Forest Village' where the fish friends live, there's also a 'Coral Reef Playground'! A Coral Reef Playground... Doesn't that sound really fun?