Mr. Fish and an increasing number of sea creatures investigate, then decide how to deal with, a huge mess in the ocean. Includes tips for the reader to help clean up and protect the ocean.

Obe Devlin spends a lot of his time cleaning up the creek that runs through what little is left of his family's once extensive farmland, and worrying about what the developers are doing nearby, and the pollution it is causing--but one day he finds a strange creature by his creek that eats plastic, and soon the animal he calls Marvin Gardens becomes his personal secret, which he believes needs to be protected from pretty much everybody.

The Once-ler describes the results of the local pollution problem.

When he has a dream about a future Earth devastated by pollution, Walter begins to understand the importance of taking care of the environment.

Concerned about the pollution the Ganesha statues cause when her town celebrates her favorite festival, Ganesha Chaturthi, young Prema comes up with an innovative plan to keep the river clean.

When Mr. Tate's class helps out on Beach Clean-Up Day, Captain Ned teaches the children the importance of the sea and the impact of not keeping it clean.

"An introductory tale about the impact plastic waste has on the ocean is told through a lighthouse keeper's friendship with a whale named Blue"--

Twelve-year-old Haven channels her anxiety about the climate crisis into a fight against the factory suspected of polluting the river running through her town.

Told in alternating voices, twelve-year-olds JB Barnes and Sidney Miller meet aboard a scientific research ship after JB is tasked to invite a renowned scientist named Sidney Miller and mistakenly invites a girl with the same name who will do anything to get out of going to summer camp.

Alba the fish has spent her entire life collecting precious objects that drift down to the ocean floor. From delicate shells to brightly colored coral, each year on her birthday she gathers one more precious item. But over the years, Alba notices her collection is losing its sparkle and that the world is changing. There is trash everywhere! When, on her birthday hunt, something unthinkable happens, it seems like the plastic may have changed her ocean...