cannon 40d lense question

[TDTA1181]

My wife has this camera & I was looking for a lense to take pics of my corals w/, any suggestions? I know I need a macro lense but other than that I don't know anything a/b photography.

 

[LetItReef]

Look into Canon standard 100mm OR their "L" 100mm both are 2.8. Check B&H online.

 

[ness]

And if you want to get even closer the Canon MP-E 65mm is an awesome lens though pricey too. [h=1][/h]