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.
Tandy's sand frog
Tandy's sand frog occurs in dry savanna, bush land, and grassland at elevations below . It can often be found in agricultural areas and is associated with loose sandy soils where pans form. Breeding takes place in ephemeral shallow water, ditches, streams, and dams, after individuals emerge from burrows at the start of the rainy season. The eggs are deposited in pools formed by rainfall, and the tadpoles develop in these.