The narrator lives in a little blue house beside the sea, observing the natural world around her.

I went for a walk at the seashore today. I saw lots of pretty little seashells! 1 diving gray dolphin, 2 striped beach umbrellas, 3 leaping fishes and so much more. What a good walk I had! - back cover

Geronimo tries to enjoy his seaside vacation even though his hotel is dilapidated.

When Gideon decides that he is going to build the most spectacular sandcastle anyone has ever seen without the help of his little sister Audrey, his day at the beach becomes a lesson in sibling bonding.

Whistler and Lila, two of the mice children who live in a lighthouse, meet a young octopus when they visit the beach during low tide.

After a long winter, the mice Whistler and Lila invite a sleepy bear to have breakfast at the lighthouse, but when he falls asleep in the garden for forty-three days, they realize he might not be done hibernating.

One night after a storm, environmental activist Rachel Carson takes her nephew Roger out for a walk by the sea. Includes notes about Rachel Carson, the story, and bioluminescence.

"When a baby sea lion's mother leaves him at the lighthouse, the lighthouse family enjoys caring for him until she returns"--

Spending the summer after seventh grade at his great-uncle's oceanside museum, Thatcher and local girl Trudy team up to help Shoal, one of the people of Atlantis cursed by a witch whose head still survives, and who has an army of monstrous creatures helping her.

When a baby albino dolphin caught in old fishing netting washes ashore, Paralympics sailing hopeful Felix and English school girl Kara work with veterinarians and specialists to save and reunite the dolphin with her mother, setting off a chain of events that might just save the reef from the environmental effects of proposed dredging.