Of all the creatures in the ocean, sea horses are Echo Reef's favorite. They're sweet and gentle and they glide through the water so gracefully. When Echo discovers that Rocky Ridge, one of her Trident Academy classmates, has his own pet sea horse, she wants one right away. Not everyone agrees sea horses should be pets, however. Perhaps they are happiest when swimming freely. But Echo thinks that if Rocky can make a sea horse happy, she can too! Can't...

When her class at Trident Academy visits a pod of whales, Kiki Coral must overcome her fears with the help of her friends.

"Not one of the merkids in Shelly Siren's third-grade class can believe the shell-shattering news: Shelly is a princess! A real princess! It's been a well-kept secret in Trident City, but now the word is out, and Shelly doesn't know how to act! Should she start wearing a glittery crown? Or move to a grand undersea palace? Will her friends have to call her Your Highness? Being a princess may be exciting, but Shelly's not sure she can truly play this...

While preparing for a unit on storytelling, the mermaids of Trident Academy learn of a legendary pirate treasure in their own city and Pearl decides to find it, despite a warning that it is guarded by a ghost.

"Pearl has always dreamed of being famous: the star-studded stage, the sea flowers, the applause! So when she finds out that her third grade class is performing The Little Human, she just knows she ll get the leading role. Especially since world-renowned merstar Angelfish Molie is judging the tryouts! But in a shocking turn of events, Pearl s best friend, Wanda, gets cast as the little human instead and Pearl is stuck playing the stinky sea witch....

While Kiki and Echo help Shelly prepare for a royal tea with her visiting great-aunt, Queen Edwina, Shelly worries that the Queen will make her leave Trident City and move to Neptune Castle.

Gives information about the benefits of outdoor physical activities, including digestion, nature appreciation, and better overall health.

Shows games and activities that, when played with friends and family, can help promote health and well-being.

Unable to comprehend a beloved librarian's imminent marriage to a cafeteria worker who seems to be perpetually grouchy, Pearl becomes jealous when Echo, Shelly, and Kiki are all asked to be flower girls.

Echo's third grade class visit the Titanic and figure out a way of including their new classmate, Anita, who is confined to a wheeled chair.