I was just looking at dolphin fabric yesterday on fabric.com - but I settled on sharks for my son (he's shark-crazed). Did you see these?
http://www.fabric.com/ProductDetail....4-ced7568d459a
http://www.fabric.com/quilting-fabri...d-29889bf8fb7b
I like the second one best but it's out of stock right now. They should be getting more in though.