31 May 2011 (-1 in time zone):

I was offered a scooter ride and dropped off at Aro'a Beach, while the others went on their own ways. Supposedly, this is one of the best snorkelling sites on the island, beingna large lagoon protected by ra'ui, an ancient fishing and harvesting ban used to manage resources.

Rough notes:
http://mandarinmanmarktravelnotes.blogspot.com/2011/05/2011-nz-to-sf-day-18.html