In Reply to: Snorkelling / top 10 posted by Legion748r on Tuesday, 20. April 2010 at 23:32 Bali Time:
If you facny heading right up north for a few days then Menjengan Island is a nice spot for a snorkle. Then head around to the east and try Tulamben and the wreck which can be accessed from the beach.
Amed has some good snorkelling too and then down near Candi Dasa you could try the Blue Lagoon - nice.
There are some decent spots over at Nusa Lembongan and Penida too.
Hope this helps.