Pacific white shrimp are among the most widely cultivated shrimp in the world. This is due mainly to ease of cultivation and rapid growth rate; harvesting begins after 120 days. The two warmwater species known as Pacific whites are Penaeus vanna­mei, found from Sonora, Mexico, to northern Peru, and P. stylirostris, which ranges from Baja, California to Peru. Both are also harvested from the wild by trawlers, though the volume of farmed is considerably greater than trawl-caught supplies — especially vannamei from Ecuador. In the United States, Pacific whites are farmed in Texas and South Carolina. Similar to Gulf white shrimp, both of these Pacific species can reach about 9 inches. IQF and block-frozen whole shrimp are becoming more popular as farmers look to pass processing costs on to end-users. Quality of pond-raised Pacific white shrimp is normally high, owing to strict controls and the lack of at-sea time that accompanies shrimp harvested from the wild.