translation.en: So two populations of tunas -- that is, we have a Gulf population, one that we can tag -- they go to the Gulf of Mexico, I showed you that -- and a second population.
translation.zh: 所以 两个群落。 一个是我们标记的海湾群落， 它们前往墨西哥湾， 我们可以看到 而第二个群落。