Meet Buster Bee and the critters! The irresistible characters from Robert Stanek, bestselling creator of Ruin Mist and Magic Lands, are off on fantastic learning adventures to explore the deep blue sea where they meet mamma sea turtle and her babies, colorful sea horses, and a variety of other undersea animals. In this special omnibus edition, we collect 6 complete picture books and 9 sets of flash cards. Inside you'll find the reader favorites: Buster Explores the Sea; Buster's Undersea Counting Expedition 1 to 10; Buster's Undersea Counting Expedition 1 to 20 Undersea, 2, 3; Buster's Undersea, 4, 5; and Buster's Undersea, 6, 7. These stories will help your child learn important counting, number sequencing and number grouping skills.