The Babysitters is the 10th episode of the first season of Sea Princesses. In this episode, Ester and Marli confidently set out on their first babysitting job. But it all goes horribly wrong when they lose the Sea Lion King's son, Naimo, who disappears in search of his favorite toy.
Though the synopsis states that Naimo is the Sea Lion King's son, the following dialogue in the episode disproves this:
Polvina: "Leia's gone away for the week with her father, so the Whale Queen is looking for a student..."
Ester: "to babysit her young son for a few hours after school."