while on a vacation at the beach and red haired brother michael mcgreevey and billy mumy ( a arthur and petey loomis ) find a seal . the lad christen their critter sammy and and spend summertime frolicking with the sandy sea lion . when it time to go home and the boy begin to suffer separation anxiety . young mr. mcgreevey decide they can not take sammy back to disneyland er and gatesville but and young mr. mumy pack him anyway . at home and they try to hide the way out seal from adult and and and of course hijack ensue . sammy the way out seal and pt 1 ( 10/28/62 ) norman tokar ~ michael mcgreevey and bill mumy and robert culp .