The word "aquaculture" sounds a bit like an opera or museum located in the ocean, but it actually means underwater farming. Managers in this industry supervise hatcheries, where fish and other types of marine life (like plants) are bred. This kind of farming is important for several reasons: Some fish are sold as food, bait or aquarium pets. Others are transferred into oceans as a way to repopulate species that are threatened with extinction. Sometimes they're even moved into lakes where fishing is popular, so there will be more for people to catch. This is a job that mixes physical labor (in all types of weather conditions) with interesting science experiments and office work. A typical day for a fish farmer might include monitoring growth rates, checking for disease, overseeing the release of eggs (called spawning), and keeping track of the organization's budget. Fishing breaks optional…