Mystery of funky "disco clam" flashing revealed

In the dark, underwater caves of the Indo-Pacific Ocean, a lucky diver may be treated to a rare underwater light show: the flashing of the clam Ctenoides ales, also known as the 'disco' clam. How and why these invertebrates produce their spectacular display is a mystery. New research by Lindsey Dougherty of the University of California, Berkeley, suggests that scaring off predators or luring prey may be the primary motivations for the disco clam's flashy behavior.

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