In some states in West Coast USA, moon fish is sold in the fish shops(every now and then). They are not too bad tasting, except for one thing: you get very weird and vivid dreams after eating them!!!
The Conch are really delicious aren't they? In the Florida Keys, they are the No. 1 restaurant attraction. If I could get them in Singapore, I will not bother to eat anything else, not even abalone!
Regarding the bluefin tuna casting off the rocks, yes, there are some videos online that claim to show such action taking place today, but the ones shown are not 'real' bluefin tuna. They are (latin name) Kishinoella tonggol, not the (latin name) Thynnus thynnus.
Believe you me, with the price of bluefin tuna at today's levels, real bluefin tuna that come so close to shore will all be stiff and frozen and on Tsukiji Tokyo's floor in less than 24 hours!