Mizugumo Monmon
English title: Mon Mon the Water Spider
Japanese title: 水グモもんもん
Type: Movie
Source: Original
Episodes: 1
Status: Finished Airing
Aired: Jan 3, 2006
Duration: 15 min
Rating: G - All Ages
Studios: Studio Ghibli
Genres: Fantasy, Romance
Demographics: Kids

The short film's main character is a water spider who seems to have fallen in love with a water strider. Though she is scared of him at first, the water strider soon gets used to the presence of the spider. 

(Source: Wikipedia)