Usually we live on the surface of our mind. In sleep we dive down deeper but lose our sense of self.
If we maintain some awareness in these deeps of the mind, it is somewhat like snorkelling in deep sea; we realise what immense and unbelievable depths lie beneath us. Dreams often portray this as depth—a hole, deep water, a chasm; space; our non-verbal life in the womb, or early childhood, which is remembered as patterns of feeling reaction rather than verbal utterance. In the depths we may find gems, skeletons, archaeological objects, and these relate to the memory of our evolutionary past, family influences we carry within us unknown. Deep cuts: suggests a hurt which penetrates us; or emotions which affect us powerfully. Idioms: in deep water, in the deep end; deeply troubled; deeply hurt. ... A Guide to Dreams and Sleep Experiences
Psychological / emotional perspective: We may be trying to understand archetypal patterns that have not been recognizable in the past. There is information available to us which we can only understand through being able to appreciate our own emotional depths.... Dream Meanings of Versatile
Material aspects: When we dream of the deep we are usually considering past family influences of which we may not be consciously aware. Patterns of behaviour are often repeated in families and it takes some dredging through family stories and myths to have us recognize such patterns.... Dream Meanings of Versatile
(Fryer) In a dream, deep frying signifies evil, adversities, arguments, problems, failing to do one’s prayers, following one’s mind, passion and desires, or backbiting and slandering people. (Also see Frying)... Islamic Dream Interpretation
Pulled by a boat on the surface of the water, the dreamer who is waterskiing may be experiencing the force of someone else’s decisions pulling him or her. Falling while water- skiing could easily indicate an emotional fall.... Ariadne's Book of Dream