Abstract
The disappearance of a population of the rock-boring sea urchin Echinometra lucunter is documented along a vertical rock wall off Grotto Beach on the island of San Salvador, Bahamas. 9,960 urchin burrows were counted along a 332 m × 1 m length of the rock wall. Only one E. lucunter was found to occur per 664 available urchin holes. Likely factors that may have contributed to the disappearance of urchins include circulation patterns and elevated temperature.
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