Having been to the Maldives a few times now (Meeru/Angaga/Sun Island/Liveaboard/Reethi Beach)
If you are planning a trip over the summer - I can heartily reccomend Reethi Beach. I was there for a week in August and we had numerous dives with Manta Rays, a snorkelling trip with 3 whalesharks and a dozen Mantas and a dive with them again 4 hours later.
Lost of pods of dolphins on the way to and from dive sites.
Snorkelling was fairly good off the island also.