Beneath ocean waves there exists a fascinating and vital ecosystem. Underwater meadows, teaming with vibrant life, sway and ripple in the currents. Welcome to the wonders of seagrass. These underwater flowering plants evolved from land plants millions of years ago. Often called “the lungs of the sea,” seagrass meadows are found on every continent except Antarctica. Within this ecosystem is an abundance of marine life, including many species of fish, mammals, reptiles, and invertebrates. And beyond providing shelter and food for these inhabitants and visitors, seagrass plays an important role in the health of our planet. Seagrass lessens the effects of climate change and even helps filter out plastics and pollutants awash in the ocean. But this important ecosystem is under threat from many human activities. It’s time to pay attention to this vital space on Earth. Through lyrical text and ethereal artwork, the wonders of the awe-inspiring world of seagrass comes to life for young readers. Back matter includes information about the diverse species making their homes in seagrass, along with a glossary of terms.