"The magic tree house whisks Jack and Annie away to Greenland where they discover they've traveled back in time to meet Lief Erikson"--

Amber leads her fellow mermaids in trying to help beluga whales that are trapped in ice, while working on solving a riddle from evil Mantora, whose theft of the Snow Diamonds may cause the Ice Kingdom to melt.

"Join Super Narwhal and sidekick Jelly Jolt as they take on three SUPER new stories in this early graphic novel series. Happy-go-lucky Narwhal and no-nonsense Jelly find their inner superheroes in three new under-the-sea adventures. In the first story, Narwhal reveals his superhero alter-ego and enlists Jelly to help him figure out what his superpower is. Next, Narwhal uses his superpower to help a friend find his way back home. In the third story,...

"Princess Lana can't seem to speak up in class at the Royal Mermaid Rescue Crew School, even when she knows the answer. It's much easier to chat with her new friend, a horned creature named Spike. With Lana's help, Spike discovers he's a narwhal, and together they swim north to find his long-lost family. The chilly Northern Seas are full of new adventures--but also an emergency! Can Lana finally find her voice and save the day, or will she freeze...

"Dive into new stories that are sure to fright and delight! Narwhal loves Halloween--it's a great excuse to dress up in a spooky and silly costume, like a ghost, a mermaid, a banana, or maybe even Marlow the Mustachioed Moose. It's a skeleTON of fun! Jelly isn't dressing up, though--he's a little scared of this time of year, and would prefer to hunker down in a hidey-hole until Halloween is over. But when a scary sea monster makes an appearance and...

"En esta ocasión Narval y Medu se convierten en superhéroes, con sus supertrajes, sus identidades secretas Éy sus superpoderes! Pero Ècuál será el superpoder de Narval? Disfruta con las aventuras submarinas de esta superpandilla y con las de sus alteregos Supergofre y Wonderfresa." --

"Narwhal wishes to see a unicorn -- and actually becomes one! When Jelly wonders what a unicorn is, Narwhal explains that they're pretty much narwhals of the land (!) -- and then gets carried away with a grand plan to see one. With the help of Star, Narwhal's wish comes true in the wildest, weirdest way: Narwhal gets some land legs and takes their first step ashore. After some wibble-wobbling and a bit of practice, Narwhal is soon galloping along...

"Narwhal and Jelly come across a strange object and wonder what its purpose might be."--

"As the siren Effluvia tries to melt the Artic ice palace and destroy the sea animal sanctuary, the Sea Keepers and a friendly narwhal search for the magical pearl that will stop Effluvia. Includes tips for being a real-life sea keeper."--

"As a school project, best friends and purrmaids Angel, Coral, and Shelly set out in search of a mermicorn." --