They are weird little creatures. That being said they with inflate and deflate a couple times a day(circulating the water through them) doing a mini water change for them selfs if you want to think about it this way. When bringing home a new nem there are a few things you have to think about. Your water quality vs what they came from, not saying yours is bad, but it's something to think about. Also changes in levels of salinity, and the most important is your lighting vs where they were coming from. It may have hidden it self due your lighting being different from the store you got it from. They take awhile to get ''comfy'' in our tanks. Not to mention it may have just been shipped half way around the world, then landing in your tank. Lots of stress. Don't let this stop you from trying again with another nem. There one of the most fascinating creatures in the sea and with alittle more research and letting it settle in for a couple of months you will have that awesome nem you wanted. Keep your head up and keep on trucking.



