Stella gets a big surprise when her mom plans a trip to visit their family in Mexico! Stella loves marine animals, and she can't wait to see the ocean for the first time, until she arrives and learns that the sea and its life forms are in danger due to pollution. Stella wants to save the ocean, but she knows she can't do it alone. It's going to take a lot of work and help from old and new friends to make a difference, but Stella Díaz never gives...

"Under the sea, a crab follows its heart and its calling, bringing everyone together in the wake of a disaster"--

"The Super Sidekicks are back! JJ, Flygirl, Dinomite, and Goo are settling into their fancy new headquarters and living the sweet life of superheroes. The Mother of the Seas, on the other hand, is NOT happy. She's sick of land dwellers using the ocean as a dumping ground ... and she's seeking revenge! Can the Sidekicks step up and save humanity from the ocean's rage?"--

Seaside Sanctuary Marine Wildlife Refuge in South Carolina has a wild pen which is supposed to be healthier for the marine animals brought there, but the three new dolphins are getting sick and no one can explain why; Elsa Roth, whose parents work at the sanctuary, is convinced that a local chemical plant is to blame, but since the water tests do not show contamination she is having trouble getting the adults to believe her--and if she is going to...

The inhabitants of a coral reef are threatened when a shady real estate deal started by the greedy Groper floods their area with poisonous waste.

"While looking for a place to live, Lucky bumps into a certain someone and discovers something even better than a shiny new shell: friendship...Dynamic backmatter provides further details on the environmental crisis and how readers can prevent and reverse ocean pollution."--

A whale takes a child on adventure across the ocean, and together they explore the wonders of the ocean world, but also the sad state of plastic pollution--and the child returns home to try and help the whale to save his marine home.

"Zandi was always thinking and dreaming about the ocean. Then, one special day, the ocean calls for her. Zandi tentatively approaches the water--and that's when her adventure begins! She soon finds herself transformed into a mermaid and on an unforgettable underwater journey, where she hears the song of the ocean. But there is something threatening this magical world. Is the key to protecting it buried in stories from the past? Join Zandi in her mission...