oysters. >> ha: yeah, yeah. >> anthony: a lot of pearls for sale in ha long bay and in vietnam. they come from places like this. it takes over a year to grow each pearl, and there's no guarantee an oyster will even yield one. ♪ water spinach, i think that's called, right? >> ha: water spinach. that's the most common vegetable for vietnamese people in summertime. >> anthony: yes. mm-hmm. >> ha: yeah. >> anthony: what kind of fish are these? little fish. [ laughter ] >> ha: yeah, ha long fish. >> anthony: ha long fish. >> ha: yeah. >> anthony: it's delicious. good fish. this is a pretty prime piece of real estate. they've lived here how long? >> ha: for many generations. this old grandma is 78 years old and she said that her grandparents lived here before