Hey Arnold!

Season 1, Episode 4

Episode Title: Field Trip

Air Date: 1996-10-09

Overview:

The kids are really looking forward to their field trip to the aquarium - especially when they remember the scary Lock Jaw from their last trip. But, when they get there, they see that Lock Jaw isn't really that scary. Arnold notices how neglected the old turtle looks, and returns later with Grandma to set it free.