I bought some sea monkeys a couple of weeks ago and they are fantastic! i did not think mine were going to hatch as I was stupid enough to not read the instructions properly so i used tap water, not bottled. I ended up boiling the water and leaving it to cool as i thought that might be better for the young sea monkeys. Well i added the pouch of instant eggs and waited. Being so impatient, i was constantly looking for tiny seamonkeys in the container. After a couple of days they hatched. I now have 6 large seamonkeys (2boys the rest girls) and many little ones. (And two of the girls are pregnant). I highly recomend people buying these little critters, they are brilliant! ... and very hypnotic :)