The Big Island of Hawaii offers some beautiful diving and snorkelling opportunities.  I shot this at night with only a few flashlights for illumination.  The largest manta was about 10 feet across!  The crew of the Sea Paradise was wonderful!  We highly recommend them on your next trip to Hawaii!  The Manta in the video missing her Left Cephalic fin and a clear W with a diamond shaped dot above the left side is Koie I have dove with her twice now.  She is very friendly.