Sea Turtle Nest Sex Ratio: Temperature-Dependent Sex Determination (2D)

Sea turtles have no sex chromosomes — every hatchling's sex is decided by the sand temperature its egg experienced during incubation. This 2D diagram lays the same nest out three ways at once: a rotatable top-down view of the buried clutch, a temperature-vs-depth graph with the sigmoid probability curve that turns temperature into sex, and a cross-section of the sand column colored by its own thermal gradient. Adjust surface sand temperature, nest depth, shade cover and the species' pivotal temperature and watch the female/male split and a hatch-viability estimate respond live — the same mechanism conservation biologists use to explain why warming beaches are quietly skewing wild turtle populations toward all-female.