THIS IS NOT MY SEA MONKEY "TANK" !!! YIKES!!! THE MOLD!! I found this pix on the internet but the Sea Monkeys look just like ours!!! :) So what exactly are Sea Monkeys? Sea Monkeys are a type of brine shrimp, and a member of the animal family Crustacea, which also includes crabs and lobsters. All crustaceans have a hard shell (known as an exoskeleton) that provides their bodies with support, the way our bones help us keep our shapes. Having a hard shell is great when you’re a small creature in a big ocean! It makes it more difficult for animals to eat the Sea Monkey and get to its gooey parts inside. But there’s a big problem. As the Sea Monkey grows bigger inside the shell, the shell stays the same size. So it needs to shed its shell, but this exposes its soft bodies to the outside world. It’s a perfect time for predators to eat them! (Fortunately, Sea Monkeys don’t have any predators in the little tank, so yours will be safe!) So they want to grow that shell quickly. Once the shell grows back, larger and harder, they are protected until the next time they need to grow bigger! I'm not sure that I can handle the tank getting this "green" and gross!! Our Sea Monkeys are happy I guess!? We feed them every couple days and Clayton does peek at them maybe twice a week. I am starting to wonder how long the Sea Monkeys can live without food? What am I going to do when we do run out of the fine green powder? Do I order more from the internet or try some alfalfa meal :) ? Do I order a new and bigger tank? hmmm......I think not. I'll let you know what we decided.......