When ocean currents and winds combine, nutrients rise up from the depths in a process called upwelling. The plankton follow the nutrients, and predators follow the plankton. This results in a feeding frenzy at all links of the food chain. Most of the seafood we eat is caught at these upwelling sites.


Key Facts In This Video

  • 1

    Most plankton can't fight the ocean's currents, and drift along with them. (0:39)

  • 2

    Some types of plankton remain small drifters, whereas others grow into different forms of marine life, including crustaceans. (1:34)

  • 3

    When wind and currents carry nutrients up toward the ocean surface, plankton follow, drawing hordes of larger predators. (1:55)

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