They represent humbleness that is capable of producing the pearl of spiritual perfection inside. The shell symbolizes fecundity and eroticism. They are also the symbol of the maternal bosom that encloses the pearl: they indicate fertility, but also loneliness and distance in unknown seas. (See pearl )
Gallery of dreams
Do animals dream?Research conducted by various scientists show that animals do experience dream while sleeping. They also experience similar sleep stages like human beings - REM and Non-REM. If you have noticed a dog sleep, it might sometimes wag its tail, this indicates some response to its dream. A study was conducted in a cat by removing a part of the brain stem, which will not prevent it from reacting to the dream during REM. It was noted in some cats they were aggressively chasing mice as in reality.
Our brain can remember loads of images we see everyday. These images are stored by a part of the brain. When we are reminded of the incident or the person, our brain reproduces these related thoughts in the form of images. Some people with extra sensory perception experience dreams about future. They can predict the future through their dreams. To experience a pleasant dream, always go to sleep with positive thoughts. These thoughts not only induce good dreams but also give you a fresh start in the morning.