Oooo, pretty. I really, really like the mermaid - I don't think I've ever seen one with dragon wings before, but then again I haven't looked at that many mermaid pics before. ^^' Anyhow, she looks great, especailly the nice, flowing hair. The dolphin's really good, as well, very nice anatomy, but there's one teeny thing off about him - a dolphin's lower jaw is actually slightly longer than the upper. Then again, I dunno if you'd be able to see that from this angle so well... at any rate, it's not very distracting at all.

Keep drawing!