It's the Sea! Let's Set Sail! Niko Niko, Pun (1990)
Original title: 海だ！船出だ！にこにこ、ぷん
It's the Sea! Let's Set Sail! Niko Niko, Pun is a 1990 Japanese-language animation movie directed by Toshio Hirata, with a running time of 1h 5m. It stars Kaneta Kimotsuki, Keiko Yokozawa and Ryusei Nakao.
A feature-length animation of the popular work "Niko Niko, Pun", which began broadcasting in the 1980s as a corner of NHK's educational program "Okaasan to Issho". The original "Niko Niko, Pun" was a live-action puppet show in costume, but in this anime version, the three main characters are voiced by the same voice actors, including Kaneta Kimotsuki. One day, Porori hears from her mother that she has a new baby brother. With the help of Jajamaru and Pikkoro, they set off on a boat to find their brother, but for some reason, the three of them end up on an island inhabited by pirates.