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.

Presents information on various bodies of water, including rivers, lakes, and oceans, as well as how humans depend on and use water.

"From sunlit surface water that teems with life to the deepest, darkest depths filled with some of Earth's most unusual creatures, oceans are home to a wide array of life. Peel back the corners of the ocean to find out what fascinating life exists within this ecosystem, from Earth's biggest animal, the blue whale, to tiny organisms, such as kelp. Discover where the world's oceans are and what you can do to help protect our planet's rich waters."--...

Looks at the work of renowned octopus scientist Jennifer Mather and a team of researchers on the island of Moorea, near Tahiti in the South Pacific, where they work to learn more about octopuses and their behavior.

Answers questions about the ocean, from its shallow waters to its deepest and most mysterious parts.

"The oceans have always shaped human lives," writes marine biologist Helen Scales in her vibrant new book The Brilliant Abyss, but the surface and the very edges have so far mattered the most. "However, one way or another, the future ocean is the deep ocean." A golden era of deep-sea discovery is underway. Revolutionary studies in the deep are rewriting the very notion of life on Earth and the rules of what is possible. In the process, the abyss is...

"From one of the world's most renowned cave divers, a firsthand account of exploring the earth's final frontier: the hidden depths of our oceans and the sunken caves inside our planet. More people have died exploring underwater caves than climbing Mount Everest, and we know more about deep space than we do about the depths of our oceans. From one of the top cave divers working today--and one of the very few women in her field--Into the Planet blends...

For those with a curiosity about shores or a desire to better understand them, The Beach Book shares the basic science behind waves, tides, sea level, sand dunes, salt marshes, and beach erosion. It tells sunbathers why the beach widens and narrows from week to week and helps boaters and anglers understand why tidal inlets change. It gives home buyers insight into gauging erosion rates and provides natural-resource managers and concerned citizens...

The Earth's climate is already warming due to increased concentrations of human-produced greenhouse gases in the atmosphere, and the specter of rising sea level is one of global warming's most far-reaching threats. Sea level will keep rising long after greenhouse gas emissions have ceased, because of the delay in penetration of surface warming to the ocean depths and because of the slow dissipation of excess atmospheric carbon dioxide. Adopting a...