Overview
- Park managers report the rains last weekend triggered the island‑wide march, which has begun earlier than usual this year.
- Authorities estimate the island hosts as many as 200 million red crabs, with roughly half expected to travel from forest burrows to the shoreline.
- Residents and park staff use rakes and leaf blowers to clear roads, and some roads are temporarily closed or fitted with crab bridges to reduce deaths.
- Males reach the coast first to dig burrows, females incubate eggs, and mass egg release is expected at high tide on November 14–15 tied to lunar cycles.
- Officials credit a microwasp that reduced yellow crazy ants for a population rebound from about 55 million in the early 2000s to roughly 100 million or more.