The Parlor Aquarium

Suneo describes what the Ocean Park is like, and Nobita is very envious. He secretly takes Doraemon's "Ozashiki Tsuribori" "Koekata Marine," "Handbari," "Small Light," and a miniature submarine. Doraemon finds out and begin teaching Nobita how to build a miniature aquarium. Nobita and Doraemon go fishing and accidentally catch a swordfish, getting Doraemon's pocket wet. Doraemon takes off the pocket to dry it and then goes with Nobita on a submarine trip to explore the sea. Unexpectedly, a whale drags their submarine to the deep sea. Nobita and his friends are trapped, and their mother can't find them. Luckily, their cries for help turn into a gust of wind and are discovered by Gian and his friends. Gian is furious and kicks the water tank, allowing Nobita and his friends to escape.