Sea turtle nesting beaches are critical welfare environments where hatchlings are disoriented by artificial light, females are disturbed by beach activity, and climate change is skewing sex ratios toward females.
Sea turtle nesting beach welfare is shaped by human-caused disturbance at a life stage of extraordinary vulnerability. Hatchlings emerging at night rely on the brightness of the open ocean horizon to orient toward the sea — artificial lights reverse this cue, directing hatchlings toward roads and buildings where they die of dehydration, predation, or vehicle strikes. Female turtles disturbed by beach activity during nesting abort attempts and return to sea without laying. Climate warming of sand above 29 degrees Celsius skews sex ratios toward females, threatening population viability. Simple interventions — light ordinances, beach access restrictions during nesting season, nest protection cages — substantially improve individual hatchling welfare and population-level outcomes.