Excavate three genuine shark tooth fossils with the National Geographic Shark Tooth Dig Kit by Blue Marble. This hands-on STEM kit includes a shark-themed digging brick containing a crow shark tooth, a sand tiger shark tooth and an otodus shark tooth plus a chisel and brush, a magnifying glass and a full-color National Geographic learning guide to identify specimens and teach paleontology and marine biology, ideal for curious kids and homeschool lessons with adult supervision recommended.