Or hit up Nobu, one of the many outposts of the famed sushi dynasty, where Russian models and Armani-clad businessmen dine on slabs of rich fatty tuna sashimi at a long stone bar.

BBC: Surf and turf gambling in the Bahamas

His firefly squid sashimi and carpaccio were tasty (and less squishy than the whole squid), but the standouts were the luscious beni-zuwaigani (red queen crab), velvety shiroebi (white shrimp), maiwashi (sardine), mejimaguro, (fatty tuna), and as a bonus, a bit of uni (sea urchin), imported from Hokkaido but as good as anything local.

BBC: Japan��s mysterious glowing squid

Few foods contain it naturally -- mainly fatty fish like salmon, mackerel and tuna, as well as liver and egg yolks.

WSJ: Vitamin D to Defend Against Disease