Hello Kitty no Fushigi na Mizuumi
Genres: Fantasy
Type: OVA, Episodes: 1
Aired: 1991
Source: Unknown
Rating: G - All Ages
Synopsis:
Kitty and Mimmy hear about the mysteries of a lake when they go up to fish with their Papa. At night they discover a Loch Ness monster like creature and fairy. The monster does not want to live in the lake anime due to illegal dumping which is also causing the fish to leave. The girls recruit a grandmother witch to help the monster gain the ability of flight so it can leave. But it asks the witch to also clear the lake of debris too. Now it can live happily in its lake.