Suggested Retail:$13. Discovery Prehistoric Sea Creatures. Hatch, raise and nurture 220-million-year-old creatures in your very own aquarium with the Prehistoric Sea Creatures! Eggs begin to hatch by adding water. Watch them eat and swim through the preset aquarium that features sand and a background scene. This STEM kit is perfect for budding scientists that want to learn more about biology and ancient life forms. Recommended for ages 8 years and up.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY ALTERNATE PICK-UP ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.