Samoa suffered some major coral losses in the 2009 Tsunami. While the fish life is quite abundant, you see dead coral everywhere so we were surprised to learn that you could snorkel a Giant Clam Sanctuary at Savaia Village on Upolo.
I initially thought these clams must have been brought back in after the Tsunami, but that isn't correct. The Samoan government started a program to restock overharvested clams in the 80's. There are over 45 villages participating in the Giant Clam program but as far as I'm aware, this is the only one you can snorkel.