Hatchling loggerhead turtles live in floating mats of "Sargassum" algae. Reptomin is a suitable food for hatchling and immature/subadult box turtles. Turtle fossils of hatchling and nestling size have been documented in the scientific literature. The hatchling develops a complete sheath 10 days after hatching. Hatchling and young tortoises are at high risk of predation. In a laboratory experiment, temperature influenced hatching rates and hatchling gender. The leopard gecko hatchling will not be able to eat until after the first shedding. It is a common misconception that hatchling sea turtles are attracted to the moon. The reptile hatchling is quite the opposite of an altricial bird hatchling. This suggests that the snake preyed on hatchling sauropods at nesting sites. Mammals, lizards, frogs, salamanders, rhynchocephalians, and hatchling dinosaurs would all have been potential prey items. Little is known of the daily activities or diet of hatchling wild tortoises. Average hatchling carapace length is about and width is also about . Usually the temperature of the nest influences on the sex of the hatchling. Hatchling Nile crocodiles are between long at first and weigh around .