Beach - The beach is the meeting place of two worlds, land and sea, which may symbolize the conscious and subconscious, as well as the logical and emotional, realms of the human psyche. Perhaps there is something within your subconscious that the conscious mind needs to acknowledge.
This dream may hint that you are not getting as much pleasure out of life as you could. It may show that you need a period of relaxation and rest. On the other hand, this dream may suggest that you take more interest in your work, or life in general, so that the daily grind becomes less of a trudge and more of an adventure.

Water - represents your subconscious, your emotions, and your accumulated life experiences, and the flow of 'feeling' energy. It is also a symbol of new life, refreshment, vigor, energy, cleansing, emotional stirrings, fertility, growth, and creative potential.
The condition, or movement, of the water symbolizes your current feelings and emotions. Examples: Clear calm water would depict a feeling of overall good health, and well-being, clear thoughts and a focused mind. Muddy water would suggest unclear, or 'muddy' thoughts and emotions. Turbulent water symbolizes turbulence and turmoil within your emotional life. Dark water suggests depression, dark thoughts or moods as well as emotions and attitudes that are hidden that want to be made conscious.

Waves - represent emotional fluctuations.
If you are currently experiencing a period of tranquillity and peace, you may be dreaming about calm waters and gentle ocean waves. This dream suggests that you may be gathering energy and recharging emotionally. However, more commonly people dream of violent and dangerous tidal waves. Tidal waves or tsunamis suggest a period of emotional upheaval. Anxiety, stress, and unconscious materials may be coming to the surface and affecting your daily moods. Giant tidal waves may symbolize current emotional unhappiness and psychological stress, which are threatening to destroy you. The outcome of this dream may reveal how much strength you have to "ride out" personal storms. For example, surviving the tidal wave suggests that you have enough strength to overcome challenges. Drowning would suggest that you may be "in it over your head" and should seek assistance.

I hope this gives you some insight, good luck!