Tidal Wave 
To dream of a tidal wave represents a significant issue in life that needs to be dealt with as soon as possible. If you have been repressing feelings or procrastinating in other matters, you need to open up and deal with issues immediately.
In a dream, a tidal wave means that you are able to create with your own mind indicates that you are in control of your emotions and able to manipulate them as needed.
Waves
When dreaming of waves, notice the type of wave. Calm, clear waves indicate inner peace of mind. You are in touch with your emotions and are stable. Calm waves may also foreshadow upcoming decisions in your waking life.
Crashing waves, especially when heard, indicates your sexual nature and your need to be loving and tender with your significant other. Violent, unclear waves imply you have made a poor choice regarding an important matter.
Finally, if you are caught in an undertow or tidal wave, you have been holding yourself back. Something in your waking life has brought unshed tears to your eyes, what is it?
Delta
To dream of a delta indicates a small hurdle to overcome before releasing the pent-up energy of a past investment.
To dream that you are standing in water in the vicinity of a delta may indicate the need for a physical purging. Alternatively, you may need an emotional purging such as a session with a good counselor. The message from the unconscious is that once this release has taken place, the movement forward will be smooth and easy and an ocean of new life will open up before you.
Tsunami
To dream of a tsunami signals you're being easily overwhelmed by unresolved feelings. You may be experiencing sadness and emotional stress in your waking life.
Vibrate
To feel a vibration in a dream symbolizes your intuition. You may be able to predict an upcoming event or a change by paying more attention to the small signals around you.
Alternatively, to vibrate in a dream may indicate that you feel imbalanced, representing a sense of insecurity. You may be worried about an impending collapse of something which gives you security such as your career, your friendships, or your marriage.
Whirlpool
To dream of a whirlpool is a self-warning that your business affairs are going downhill. Be especially diligent in business and financial dealings to ensure your reputation remains intact.
Hurricane
Some people perceive hurricanes as nature's revenge on humans.
To dream of a hurricane reflects a notion of being overwhelmed by strong emotions or drastic changes. Perhaps you are not ready to deal with it yet and this thought has been bothering you.
Ultrasound
To dream of witnessing an ultrasound suggests that you want information about someone that may not be your right to have. You may not be entirely satisfied with the information that you do have and feel the need to know more.
Dreaming that you are receiving an ultrasound is more emotionally significant in that you may be wishing to uncover some insight into your own emotional world. The potential for a positive emotional shift is apparent here.
Bodysurfing
Dreaming of bodysurfing is a strong symbol of going with the flow. It represents letting the waves take you where they may and letting the chips fall where they may. Dreaming of bodysurfing is your subconscious mind indicating that you shouldn't try to alter or interfere but rather just let things go or happen naturally.
Boogie Board
To dream about seeing or riding a boogie board means that you are coasting through tribulations and taking life one step at a time.
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