Mermaids Shelly and Echo are excited to begin third grade at the prestigious Trident Academy, but snooty Pearl, jokester Rocky, brilliant Kiki, grumpy Mr. Fangtooth, and an argument over their first project challenge the best friends. Includes facts about marine plants and animals and words to the Mermaid Tales Song.

A shark has been spotted in Trident City! Pearl Swamp is so scared, she needs a shark Guard to escort her to and from school. She doesn't trust anyone who likes these terrifying creatures, especially Kiki Coral, who isn't nearly as frightened as Pearl. And to make matters worse, Pearl accuses Kiki of stealing her precious pearl necklace! Will the sharks destroy the peace of their sparkling city? Or will the mergirls have to swim in dangerous deep-sea...

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...

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.

"Shelly Siren and her friends visit King Neptune's royal castle and attend their first ball in this Mermaid Tales adventure"-- "Shelly, Echo, Kiki, and Pearl are spending their school vacation at Neptune's castle! Shelly's aunt, Queen Edwina, has invited the girls to stay for a whole week, and while they're there the girls can't wait to visit the Royal Orca Museum, see the Palace Library, ride seahorses, and maybe even attend a royal ball. Shelly...

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....

Shelly Siren loves playing on Trident Academy's Shell Wars team. But is she ready to complete in the Shell Wars Championships in the fintastically famous city of Atlantis? As part of their trip, the mergirls get a tour of Atlantis and swim through Poseidon's Temple where Shelly sees a spookfish, which according to legend, carries a horrible curse.

Kiki and her friends learn about coding as they compete to be the escort for a young narwhal who will visit Trident Academy with her famous parents.

Pearl Swamp is not happy when her selection as the next winter princess is overshadowed by her family's decision to adopt a baby boy.

Shelly can't wait to celebrate her birthday with a small sleepover and her grandfather's homemade pizza. But when Pearl gets involved in panning, the little party becomes an overnight extravaganza at the People Museum, complete with a scavenger hunt and way-too-scary stories! Shelly is worried about spendig the night in the museum's dark spaces and creeking exhibits. Surprisingly, everything goes swimmingly--until strange, glowing lights mysteriously...