A girl travels around the world on a whale. What's the name of the play? The heroine's name seems to be Nanami, and the whale's name seems to be Tico. This is an animation.

The Little Heroes of the Seven Seas (other translation names: Titi and the Sea, the embankment of the Seven Seas can be the Seven Little Heroes of the Seven Seas, Japanese name: つののティコ, TVB translation name: Friends of the Deep Sea) is the 20th animation work of the world-famous theater series produced for Japanese animation companies. It is an original work of a world-famous theater. Nanami, aged 0, has been a marine biologist since childhood. His father Scott and his sworn brother Yalu have the special ability to swim freely in the water like fish. The closest partner is the killer whale dike. In order to find the legendary luminous whale, they took the marine research ship Peperinchi as their home and embarked on a romantic and adventurous journey. In addition, during the trip, they also met Shirley Lu, the daughter of a rich family, James the housekeeper and Thomas the little boy. Have you ever imagined an incredible trip with a 7-ton whale? Now, Nanami, the heroine who swims freely in the vast blue land of Nanami, lives with Scott, the father of a marine biologist, and his partner Al (Alfonso), and travels around the world with his friend Tico, a killer whale, on the ocean research ship Pepelinino. The purpose is to find the legendary creature "light whale", but it is an ugly creature. Cheryl and Thomas, adventurous female college students and sons of senior students at Scott University, joined her friends. In order to find the bright whale, she embarked on an adventure journey to the ocean of the world. However, the organization "CMC", which asked for light energy, found that the light whale had a so-called electronic energy response. CMC captured the light whale and began an ecological investigation. However, Scott, who disapproves of human beings sacrificing other creatures in pursuit of technological progress, entered CMC.