Grow 'Em Hatch 'Em, Love 'Em Put the egg in water and watch it hatch! Simply put your egg into a container of water and wait 24 hours. By the end of the day you will have a hatchling. Remove the shell portion and place your hatchling into its own large container of water. Your small pet will soon mature to a full grown adult! It'll be your very own pet and you don't even have to feed it! 60 Easter Eggs per set.