Oh, it took me a little while to see the dolphins! I was trying to see them outside the image of the couple, while in fact, there were 9 pretty dolphins right there. :D
Very interesting Eongar. Funny how perception is based on what we carry already as an intellectual baggage.
This reminded me of a study I read years ago, that explained how children are much more sensitive to prosody in language than adults. They minds are not overburdened by words, so the slightest change in tone means a lot to them, while an adult can easily ignore that.