QBJS Swimming fish with Kelp

[bplus]

parallax? are you referring to the underwater effect made by changing the letters in the kelp? 

No, the movement of things in different depths of field. Slower, faster, but somehow adding dimension to the illusion to create that depth besides the z-indexing (where it's in front or in back) alone.

Well happy accident or wishful seeing from random speeds and coloring. 

We could do that on purpose and what a marvelous idea too! 
Add a z factor for speeds and color and putting fish behind the kelp or in front.

Update: Oh I did do that! without a Z, I used the color to decide in front of kelp or behind and fast or slow.
Wow I am so old I forgot how smart I was. ;-))