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Top-selling science author Sandra Markle presents the story of whale sharks - the largest fish on the planet. Facing threats from commercial fishing as well as climate change, they were categorized as endangered in 2016. Find out how scientists are working to study and protect these gentle giants of the ocean.

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?

¡Estar atento! ¡Hay un tiburón! Aprenda todo sobre este famoso depredador. Las preguntas de pensamiento crítico y otras grandes características ayudan a desarrollar habilidades de escucha de no ficción.

¿Qué es eso deslizándose por el agua? ¡Es una manta ray! Obtenga más información sobre estos peces planos. Las preguntas de pensamiento crítico ayudarán a introducir a los oyentes jóvenes al género de no ficción con un enfoque en un animal marino.

¿Qué es eso que oculta la anémona de mar? ¡Un pez payaso, por supuesto! Este título introduce a los oyentes jóvenes a estos lindos e icónicos habitantes del océano. Las preguntas de pensamiento crítico ayudan a desarrollar habilidades de aprendizaje de no ficción.

¿Sabías que las medusas pican a sus presas? Aprende más sobre las fascinantes criaturas que viven en cada océano de la Tierra.

Las estrellas de mar podrían parecerse a decoraciones, pero en realidad son peces! Aprenda sobre estos coloridos mar-rastreadores y cómo se mueven, comen, y crecen.

Los delfínes son conocidos por ser juguetónes intelligentes - que más podemos aprender sobre ellos? Ahora en español, este título involucra a lectores jóvenes a medida que aprenden todo acerca estes mamiferoes del mar. Preguntas de consideración ayudan animar oyentes durante su desarrollo de leer libros de no ficción.

Discover what a humpback whale has in common with a gibbon or a caribou. Learn what sets a humpback whale apart from a hedgehog or a sloth. Listeners will compare key traits of humpback whales - their appearance, behavior, habitat, and life cycle - to traits of other mammals. Through gathering information about similarities and differences, listeners will make connections and draw conclusions about what makes this animal a mammal and how mammals are alike and different from each other.

Carefully leveled text engages young listeners in learning about hermit crabs as pets. Age-appropriate critical thinking questions help build nonfiction learning skills.

Carefully leveled text engages young listeners in learning about goldfish as pets. Age-appropriate critical thinking questions help build nonfiction learning skills.

Carefully leveled text engages young listeners in learning about sharks. Age-appropriate critical thinking questions help build nonfiction learning skills.

Carefully leveled text engages young listeners in learning about rays. Age-appropriate critical thinking questions help build nonfiction learning skills.

Carefully leveled text engages young listeners in learning about jellyfish. Age-appropriate critical thinking questions help build nonfiction learning skills.

Carefully leveled text engages young listeners in learning about dolphins. Age-appropriate critical thinking questions help build nonfiction learning skills.

Young listeners will learn about clown fish. Age-appropriate critical thinking questions help build nonfiction learning skills.

What is a fish? Stingrays, goldfish, sharks, and many other creatures are all fish!

Have you ever wondered what mysteries the ocean holds? Prepare to explore the ocean from sunlit shallows to the deepest, darkest depths. Along the way, you'll meet many incredible creatures that are brand new to science. Dive to a coral reef and spot a new species of pygmy octopus. Travel deeper and discover fragile, nearly transparent jellies as they drift past. Then head down into a world of eternal night. You'll encounter animals that make their own light and zombie worms that feast on the bones of dead whales.

Have you ever wondered just how a glow stick works? Or what about those glow-in-the-dark stars you stick on your ceiling keep on shining? In her first book, author and teacher Anita Sitarski answers these questions and more giving listeners the inside scoop on everything that glows. Fireflies, bacteria, squid, jelly fish—what do all of these things have in common? They glow! It seems like one of mother nature’s mysteries, but many curious scientists have begun to shine light on this beautiful phenomenon.

Did you know there are over 400 different species of sharks? Did you know they have been on Earth much longer than humans, and even lived before the dinosaurs? Here you'll learn all about these fearsome kings of the ocean, including their eating habits and the basics of their anatomy. Sharks come in many sizes, from under a foot long to over 40 feet - and that's not even counting the long-extinct, 60-foot-long Megalodon shark. And while some have been known to bite people, they are usually quite content to hunt other sea creatures.