They fluctuate and as a result nerite snails aren't always submerged in water. Snails are incredibly diverse eaters and are known to eat pretty much anything they can slide up to. Keep the aquarium away from direct sunlight to prevent the water from getting too warm during the day. In captivity, hunger is a common cause of snails floating at the water surface, often upside down, as they try to get at floating scraps of food. It is important to mention that sea slugs seldomly live more than a year, which means that their life is usually very short, and the most intriguing thing is that they usually disappear without leaving any trace, it is something that many people really do . They can . They cannot be able to live an active life as is in the aquariums. The lifespan of an aquarium snail depends on the species of snail and on the water temperature in your tank. Use a fish net to scoop out any dead organisms from your tank before they begin to decompose. They also have an epiphragm, allowing them to trap moisture and heat inside their shell. Usually, they survive outside the water for only a couple of hours. Determining whether some gastropods should be called sea snails is not always easy. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/51\/1020953-1.jpg\/v4-460px-1020953-1.jpg","bigUrl":"\/images\/thumb\/5\/51\/1020953-1.jpg\/aid1020953-v4-728px-1020953-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"