Manta Ray 
In a dream, the manta ray symbolizes a deep connection to the subconscious. The manta ray lives near the bottom of the ocean, hiding itself in the sand. If a manta ray reveals itself to you in a dream, you are being exposed to a hidden secret within your mind. The manta ray is graceful and effortlessly glides through your subconscious. The manta ray makes an excellent guide to knowing yourself better.
Prism
To dream of a prism symbolizes your colorful personality. It may also be closely linked to your spirituality, and the need to devote more time to spirituality.
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.
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