Great colors! I really like the picture of the reef that you've come up with in these logos, more so in #6, #7, and #8; I like the zoomed in look. My two favorites have to be #6 and #8. For #6 I love the font, and for #8 I like the circular layout and the color of the fish. I'd love to see what you can come up with for a different layout, maybe the picture side-by-side with the text.