Shrimp aquaculture begins with hatchery-reared larvae subjected to conditions that emerging research suggests may cause significant physiological stress - a welfare issue affecting billions of animals at the very start of their lives.
Shrimp larvae exist at the intersection of massive scale, uncertain sentience, and poor welfare conditions. Each batch represents millions of individual animals subjected to physiological stressors - including abrupt environmental changes, overcrowding, and chemical treatments - from the earliest moments of life. Whether shrimp larvae experience suffering in a morally significant sense remains debated, but the precautionary principle suggests caution at this scale. Welfare improvements - gentler handling, optimized salinity transitions, enriched water quality - have been shown to improve survival rates, suggesting that welfare and productivity are not opposed. The sheer number of animals involved makes even small improvements potentially significant.