| Zones of minimum upwelling and, therefore, productivity, occur in the central regions of the oceans known as the gyres. |
| The gyre we planned to survey is one of the largest ocean realms on Earth, and one of five major subtropical gyres on the planet. |
| So in other words, concentrations of sea birds may start at the edge of one of these gyres. |
| But, icky, snotty clumps of algae have been seen dancing in the eddies and gyres around the ship. |
| Major ocean currents sweep the region from east to west by the Caribbean Current, with coastal countercurrents and several large gyres. |
| Unlike the Beaufort Gyre in the Arctic Ocean, these gyres do not appear to recirculate ice. |
