Copepods. They are among the most abundant multicellular animals on earth and generally regarded as the most numerous in the Chesapeake, with numbers routinely as high as 30,000 per cubic meter of water in some areas. They are a keystone food source for virtually every fish species in the Bay. But it takes a 3X hand lens to bring them clearly into view. In fact, they fly so far under the radar that their species don't even qualify for common names. Only the Latin Eurytemora affinis and Acartia tonsa are used to identify them.

In this episode, John Page Williams brings into focus one of the tiny--but important--mysteries of the Chesapeake.