Beloved Asian small-clawed otter Pinkie has a recurring bloody nose, and the team goes to great lengths to find out what could be causing it. Feisty baby American alligators arrive at the aquarium and must learn to eat in an orderly way.

A staff member heads to the Marine Mammal Center in California to help rehabilitation efforts of elephant seals. African penguins Charlie and Lizzie have been together for 25 years, and Charlie is having issues with his eyes. A piranha needs surgery.