Sea-monkeysOn Mars - World's Only Instant Pets® - Ages 6+ (Pack of 1)

The media could not be loaded. This sea monkey kit is super cool. We’re now on our third generation of sea monkeys FROM THE FIRST PACKET of eggs!! A few things that have worked for us: We feed them every 4-5 days and only about half of the TINY scoop. If you over feed them, it’ll mess up the water and can kill them but if you underfeed them, they’ll surely die. Our first ‘generation’ hatched about five, I think, and two of them survived into old age (haha). They swam in perfect synchronization for like three days at one point (it was really neat and kind of astonishing, to be honest) swimming and doing little turns and flips all over the tank. We keep ours on the windowsill above the kitchen sink in a west-facing window with partial shade (in NW FL) and they do well there. I write the date on the outside of the tank with a dry erase marker each time I feed them so not only do we not over feed, but when I’m washing my hands or dishes I inadvertently see the date and notice if it’s time to feed again. The first time I accidentally went six days we lost one of the two originals. But the remaining one survived alone for quite awhile (several more months)… until it happened again and we lost the second of the two originals. Twice before this there were new tiny little babies but I’m fairly sure the bigger ones ate them when they were still tiny. After we lost both ‘Flotsam and Jetsam’ I went to dump the water out and saw another baby!! So ‘he’ grew up (Roscoe this time, after our late dog) and had MORE babies. You can barely see him (or her) in the video but there’s the big one (Roscoe) and a teeny tiny one (yet-to-be-named). The brown thing on his backside is poop. It eventually falls off. Lol. I’m trying to feed a tiny amount every 3-4 days this time so hopefully Roscoe doesn’t eat the new guy. I think they also eat some of the algae that naturally grows on the surfaces over time. Three times now, when the water level dropped I took a small amount of filtered water from the fridge, left it out overnight to let the excess chemicals evaporate, and topped off the tank. It didn’t harm any of them. Trust me, the deaths have all been when I realized, “oh $&@! It’s been six days since I fed them!!” They’ve definitely been a really neat experience for my 4 y/o (and the rest of the fam!) and well worth the money considering we’ve had several rounds of hatchlings now! I hope this review helps. If you’re thinking about getting this sea monkey kit for kids 3-9 y/o, I highly recommend it! I even sent one to my friend’s kids in Wisconsin and they enjoyed it immensely.

I liked that the tank was very durable and textured at the bottom for helping with algae growth. One downside is that the monkeys take a very long time to hatch/grow, could be temperature but I’m not sure. ❤️

This is my first time owning sea monkeys and so far, it's been great! The first eggs hatched within 24 hours and they've steadily grown every day! The Mars aquarium is very aesthetic and fun to watch the sea monkeys swim around everything in it! I've had no issues with it, or any issues hatching the eggs.Any bad reviews you see about the eggs not hatching or the sea monkeys dying quickly is all user error. If you use distilled/spring water, keep the water between 70-80 degrees Fahrenheit, oxygenate the water daily using an electronic pump or the included pump, and feed them about 1/4th of the feeding scoop every 2-3 days, and wait 4-5 days after hatching to feed them, they will thrive and live perfectly happy little lives!!These are great as college pets, low-maintenance pets, and even for kids as long as you give them help and make sure they're doing everything correctly. I highly recommend these little guys, and I could watch them do little circles all day long as they traverse the Martian surface!!! :)

Sea monkeys never hatched. Can’t even get a refund. Wants me to return the item but it’s already been thrown away because it was defective. Gave them 5 days and nothing.

My son wanted to grow his own animals. I remember being a kid and having sea monkeys. It was exciting to watch them hatch and swim around. My son was able to set the entire thing up himself without any help. The instructions were easy to read and made sense. The aquarium was cute as well ,

my sea monkeys lived for a while the set up was my favorite and it was exactly what i remembered from when i was a kid

Egg packet was full of green liquid and unusable. The food packet was also damp. I went to a craft store and bought a basic sea monkey kit (purifier, eggs, food) rather than return the item.The tank itself is pretty unique and fun. I’ve had luck raising these little guys in the past, so i have no doubt they’ll look cool in this environment. You should use a heat source (heat mat/mini heater) if you raise them in water that falls below 68 degrees. I’m knocking off two stars because the ruined/wet egg packets are a common problem and because i paid $7 for the replacement kit.

My eggs already hatched in just 4 days! I'm beyond thrilled watching these little babies swim around and can't wait for them to grow before my eyes. Make sure to FOLLOW THE INSTRUCTIONS as they are crucial to your success. Be patient and they will reward you. I used purified water from my Brita pitcher, and I made sure to wait over 24 hours after adding the first packet. Also, I recommend using some plant grow lights if you don't have a place to put them in indirect light. I made sure to watch many sea monkey YouTubers as well for some pro tips before starting (highly recommend). When they hatch they are super tiny so keep your eyes peeled. This tank is also adorable, I love watching them swim around the arches and spaceman.