Dive down to the depths of our planet's oceans and see the stunning variety of creatures that call this watery environment home. These incredible marine animals and their ocean habitats are among our most precious and endangered resources.

In a dazzling underwater adventure, Caldecott Honor-winning artist David McLimans uses fins, flippers, and tentacles to create numerical masterpieces. From the smallest tiger tail sea horse to the giant humpback whale, this aquatic menagerie will captivate readers of all ages as they count up to ten and back down again. McLimans also explores the powers of ten to showcase amazing ocean facts from one to one billion! Once you wet your feet with this eye-popping visual treat, your view of the ocean will be forever transformed.