You may want to check out this video.
It talks about your experience and presents a conclusion about it.
Generally speaking humanity has begun to evolve. We are starting an ascension process which will have all kinds of implications. Many of the changes happening within the human physical body.
There are various ways these changes can manifest. Your specific experience represents a version of those effects described in that video.
My take on your experience is that you have telekenitic inclinations where energetic waves can be generated from your body and come out through your hands. The colors you saw in the ocean water were present in part because of the salt water but mostly because your internal body energies and most likly the focus of your intent was strong.
I have a friend who can do telekinesis and she also has visable crystaline sparkels on her skin surface most noticablely on her hands.
You could try out that experience again using a bowl of salt water.