Three young princesses reign over the sea.

The princesses try to encourage a turtle to be brave and go into the sea; Marcelo and Ester dare each other into more dangerous events.

Nub, leads Ping and Patchy into a Drylander trap; everyone is supposed to be building a float, but Polvina seems to doing most of the work.

Lia, the Lion Fish Princess is missing; everyone at school gets a turn at being the Lunch Monitor, except for Tubarina.

Tubarina volunteers to take care of Angelica's pet, Scooter; Ester backs out of participating with her friends in a shellsled race after a crash shatters her resolve.

In 'The Matchmaker' Tubarina decides she is going to match up two grumpy turtles because she figures they will be happier together, but things don't go according to plan. In 'The New Princess' The usually mean barracuda have been swimming happily.

Polvina tries to avoid hurting Ester and Tubarina after their disasterous ballet recital in her review; every time Ester gets mad at Marli she creates bad Energy.

Everyone is afraid of Bia, but they will find that rumors are not always truth; the princesses will not participate in the music competition.

Ester's grandmother is missing and the princesses go searching for her; tThe princes take advantage of Polvina so Ester and Tubarina decide to teach them a lesson.

Three young princesses reign over the sea.

In 'Polvina The Teacher' Polvina is assigned the task of helping Angelica study for the geometry test; And in 'The Pirates' Caramelo the Sea Snail Prince comes across a pirate ship.