, you can check your wife off your Christmas gift list – all she wants is a seahorse!
, her sister Kourtney and son Mason got up close and personal with the tiny sea creatures and a slew of other aquatic animals at the Mystic Aquarium
in Mystic, Conn., on Thursday, where they filmed an episode of their reality show.
"All I want for Christmas is a sea horse! I've always wanted one!" Kim Tweeted
, with a photo of her kissing the little fish through a tank.
A small crowd took pictures of the trio as they walked around the park and gazed at the water-loving residents, including some loveable sea lions, who intrigued little Mason.
They even made some friends during a behind the scenes meet-and-greet: two endangered African penguins and a 30-year-old beluga whale named Naku, whom Kim treated to some jello!