OMG! thanks so much! at least I now know the animal was a dolphin... which is weird - since there are 2 seals in the Sea Castle area. I guess it was to tie in with Seabase Alpha at the Living Seas.
Or the concept painting in the que that has plenty of dolphins working with people.
depending on different computer screens that i look at the picture on more detail comes out... it looks like 3 shades of blue... pale, light, and the dark. The 2 lightest ones have some kind of design - but can't tell what it is.