Doraemon S1E89 Even It's in the Gaster-Water

Doraemon Season 1 Episode 89 Online – Shizuka accidentally swallows her mother's opal which is worth 500,000 yen. Doraemon and Nobita use the miniature sub from episode 41 to recover it from inside her, but play a trick on her which results in Nobita swallowing an eraser, which will have to be recovered.