I really like the color scheme that you used for each panel, I think that it works really well! I also enjoy how happy that turtle (tortoise?) is and the little tiny fish in the triathalon panel. I give you mad props for the triathalon goal, that's got to take a lot of dedication and hard work! I could never imagine myself doing that, hahaha. What program do you do your drawings in? You always get such nice crisp lines!
It's just good ol' Photoshop, I just draw it really bigsauce! Check out this tutorial for makin' comics, it actually gave me the confidence to do this http://thepunchlineismachismo.com/archives/553