Upwelling
The major upwellings in the ocean are associated with the divergence of currents that bring deeper, colder, nutrient rich waters to the surface. There are at least five types of upwelling: coastal upwelling, large-scale wind-driven upwelling in the ocean interior, upwelling associated with eddies, topographically-associated upwelling, and broad-diffusive upwelling in the ocean interior.
Juncus edgariae
Juncus edgariae, is a species of rush commonly called Edgar's rush, or wiwi that is native to New Zealand. The most abundant rush species in New Zealand, it also occurs on the Kermadec and Chatham Islands. "J. edgariae" has been introduced to Britain.