A hermit crab who has outgrown his old shell moves into a new one, which he decorates and enhances with the various sea creatures he meets in his travels.

On Mermaid Day, the mer-queen throws a big bash and sea creatures of all kinds attend, including a shy shark who joins in the dancing.

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

When millions of fish start dying off the coast of Hawaii and something is destroying hundreds of ships, the government enlists Max and the flock, a band of genetically modified children who can fly, to help get to the bottom of the disaster before it is too late.

Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.

"In the hilarious ninth book of this blockbuster graphic novel series, Narwhal and Jelly learn a thing or two about tusk-tooth dental hygiene . . . and feelings! Everyone knows that Narwhal is a big fan of sugary treats - but Jelly is shocked when Narwhal's tusk-tooth isn't looking so pearly white anymore. Thankfully, no one knows more about dental hygiene than Shark - he has seven rows of teeth, after all! Meanwhile, Jelly and Crab try to teach Narwhal...

Mr. Fish feels nervous venturing deep in the sea to look for Ms. Clam's lost pearl until Miss Shimmer helps him conquer his fear of the dark.

With the help of Star, Narwhal, who is now a Narwhalicorn, and Jelly embark on an out-of-this-world adventure to a planet filled with unicorns, but when Jelly wishes he were back home, Narwhal must find a way to cheer him up.

With the help of his friends, Mr. Fish is able to overcome his anger.

"Mr. Fish's friends are all about to pout, and soon the whole class is in a bad mood. What can Mr. Fish do to turn the day around? All it takes is a simple act of kindness!"--Provided by publisher.