In Elkhorn Slough, an inlet on the California coast, seagrass grows healthy and strong in the shallow water. This healthy seagrass baffled marine biologist Brent Hughes. The scientist expected this estuary to be overrun with algae, causing the seagrass to die. Why was the seagrass thriving? As Brent investigated, signs pointed to an unexpected player helping to keep the seagrass healthy: sea otters! What do these top predators have to do with an aquatic grass at the opposite end of the food chain? Brent's discovery gave scientists insight into the delicate balance of ecosystems. Follow science in action as Brent conducts the research that led to this major discovery.

    As a mother describes to her child how many species of birds nest, from pigeons on concrete ledges to owls in oak tree boles to swallows above barn doors. The soothing refrain of “you nest here with me” eases her little one and readers alike to slumber. Combining their poetic writing and their love of birding, mother and daughter Jane Yolen and Heidi Stemple have written what is sure to become a bedtime classic.

    This closeup look at the evolution and behavior of horses, zebras, ponies, mules, and more examines their importance to humans throughout history, and includes photos of all major domestic breeds.

    The dog brings the string. The horse shares his straw. And then a surprise gatefold spread reveals how Robin knits them all together to make a safe and cozy home for her babies.

    Some old-time scientists thought that because they were so big, all they could do was float in water. Boy, were they wrong! Even today, once-common notions about dinosaurs are being revised as new discoveries are made. This lively book about the perennially popular subject of dinosaurs offers fascinating insight into how certain theories were formed, and then how those theories were proved or disproved. It demonstrates that scientific thought is as creative as it is logical and invites budding scientists to come up with their own ideas.

    in full color. Chock-full of information about the most sensitive, intelligent, and friendly of large aquatic creatures, Dolphins! should fare swimmingly with kids who read about whales and sharks.

    Here is the incredible story of Elizabeth, a real-life elephant seal who made her home in the Avon River in the city of Christchurch, New Zealand. When Elizabeth decides to stretch out across a two-lane road, the citizens worry she might get hurt or cause traffic accidents, so a group of volunteers tows her out to sea. But Elizabeth swims all the way back to Christchurch. The volunteers catch her again and again—each time towing her farther, even hundreds of miles away—but, still, Elizabeth finds her way back home. Includes back matter with information about elephant seals.From the Hardcover edition.

    This stampede of wild animals, from Chinese Alligator to Grevy's Zebra, are so rare, they're all endangered. David McLiman's bold and playful illustrations transform each letter into a work of art, graphically rendered with animal characteristics. Scales, horns, even insect wings transform the alphabet into animated life.Once you take this eye-opening safari, you'll never look at letters or animals with the same way again. A striking work of art and a zoological adventure, Gone Wild is sure to be loved by children and adults alike.

    It eats and changes some more, then in a sequence of remarkable close-ups, spins a sliken sling in which to pupate--until it finally bursts forth as a brilliant black swallowtail butterfly. Includes suggestions on how children can grow butterfiles in their own gardens.

    Think you've spotted one? Lift one of ten gatefolds to find out. A full page of fascinating information accompanies each animal so readers can learn how nature's camouflage serves hunter and hunted alike. Why do fawns have spots during their first year of life? How did killdeer birds get their name? What makes a crab spider so good at ambushing its prey? Recipient of the 2008 American Association for the Advancement of Science/Subaru Science Book and Films Prize for Excellence in Science Books.Named a 2008 Outstanding Science Trade Books for Students K-12 by the National Science Teachers Association (NSTA) and the Children's Book Council (CBC)Editor's Choice, 2007— Booklist magazineListed in "Lasting Connections of 2007," an annual roundup of the year's best books to tie into curriculum.-Book Links magazine

    Frogs are astonishing in their variety and crucial to ecosystems. Onomatopoeic text and stunning illustrations introduce young readers to these fascinating and important creatures, from Chile to Nepal to Australia.

    From the clownfish to the killer whale, sea otter to walrus, young readers will see some of their favorite animals from a perspective than they've ever had before. With informative, fun facts accompanying the stellar photographs of each animal, Life-Size Aquarium brings readers eye-to-eye with 19 different animals, including a leafy sea dragon, a luna lionfish, a humphead wrasse, two different varieties of penguins, a sea turtle, a jellyfish, a spider crab, a sea otter, and more. As in previous volumes, three of the animals in this book — a walrus, a killer whale, and a dolphin — spring out of the book in oversized gatefolds.

    Curly or straight? Long or short? It's too hard to choose--until the Cat in the Hat arrives with his Wig-o-lator--a machine that allows the kids to "try on" the hairstyles of a yak, a fur seal, and a porcupine--with comical (and educational) results! Written specifically for children learing to read on their own, this Step 3 reader is based on an episode of the PBS KIDS preschool science show The Cat in the Hat Knows a Lot About That!  Young readers will flip their wigs over it!

    Each fall, while the city's inhabitants dine on steaks, salads, and sandwiches, the great white sharks return to California's Farallon Islands to hunt their favorite meal: the seals that live on the island's rocky coasts. Massive, fast, and perfectly adapted to hunting after 11 million years of evolution, the great whites are among the planet's most fearsome, fascinating, and least understood animals. In the fall of 2012, Katherine Roy visited the Farallons with the scientists who study the islands' shark population. She witnessed seal attacks, observed sharks being tagged in the wild, and got an up close look at the dramatic Farallons—a wildlife refuge that is strictly off-limits to all but the scientsts who work there. Neighborhood Sharks is an intimate portrait of the life cycle, biology, and habitat of the great white shark, based on the latest research and an up-close visit with these amazing animals.

    They can be big, like a whale, tiny, like a shrimp, and even scary, like a shark.Even though sharks can be scary, we need them to keep the oceans healthy. Unfortunately, due to overfishing, many shark species are in danger of extinction, and that can cause big problems in the oceans and even on land.What would happen if this continued and sharks disappeared completely?Artist Lily Williams explores how the disappearance would affect other animals across the whole planet in this clever book about the importance of keeping sharks, and our oceans, healthy.