Practice measurement while learning about marine ecology and life in the ocean layers! There are so many animals living in the vast oceans of our planet! Not only does this title teach readers how to measure marine life by grams, feet, inches, and other similar units of measurement, but it teaches them how to measure ocean water using Celsius and Fahrenheit. Using familiar and unfamiliar units of measurement in an unfamiliar territory challenges readers to expand their measurement and STEM skills. Exciting images, simple practice problems, easy-to-read text, clear mathematical charts and diagrams, and an accessible glossary all help children advance their mathematical skills.