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.

How big is a giant squid? What is a dragon-fish? How do deep-sea creatures find food? What do scientists think some mythical sea monsters might really be? It's Jack and Annie's very own guide to the strange creatures of the sea including ; Sea monster legends ; giant pacific octopuses ; prehistoric sea monsters ; deep-sea exploration and much more.

Text and illustrations present such ocean creatures as the manta ray, dolphin, and octopus, explaining their physical structures and how they work.

"Did you know that sharks first appeared in the oceans 200 million years before the dinosaurs, and that they have an electrical sixth sense that helps them locate their prey? How dangerous is a great white shark? Can a whale shark really grow as big as a city bus? If you find yourself seeking the answers to these questions, then this may be the book for you! Discover where they live, why they are hunted, and what can be done to protect them. The book...

Describes many of the animals that can be found at the edge of the sea or in the sea itself.

Photographs and text explore the characteristics, habitats, and variety of fishes and other undersea life.

Danny Dragonbreath and his friend Wendell get an up-close underwater tour of the Sargasso Sea from Danny's sea-serpent cousin, encountering giant squid and mako sharks--and learn about standing up to bullies in the process.

"Narwhal and Jelly are back and Narwhal has a new obsession...peanut butter! He's so obsessed he even wants to change his name to...that's right...Peanut Butter! Ever-sensible Jelly isn't so sure that's the best idea, but is all for Narwhal trying new things (instead of just eating waffles all the time, no matter how delicious waffles are). In this third book, Narwhal and Jelly star in three new stories about trying new things, favorite foods and...

Publisher Annotation: Have you ever wondered how long a whale is? What about a shark? Or a dolphin? Alison Limentani?s extraordinary and original picture book introduces children to a fascinating world of numbers, length, and underwater wildlife. And the largest animal of all?the blue whale?gets a big gatefold!

"Oceans cover more than 70% of the world--and so much science is lurking underneath that water's surface. This survey-style book explores an incredible collection of narratives, featuring fascinating facts and stories about the world's deepest seas and oceans. This is an eye-catching, comprehensive look at the creatures and plants that populate these waters and the people who have explored it, as well as a critical look at what is at stake now in...