Taken with my SeaLife 1200 in July 2012 off of the Big Island of Hawaii. The mantas come up to eat the plankton attracted to the large lights on the bottom of the boats. We must have seen at least 20 ranging from 4′ to maybe 8′ across (it’s really hard to accurately judge size underwater). Forgive the shakiness – I am snorkling/floating and completely at the mercy of the waves.