Zigs and Zags

My, what a zig zaggy mouth you have! The cock s comb oyster (Lopha cristagalli) is a common site in tropical waters in the Indo West Pacific. This specimen was photographed in Chuuk, one of the Federated States of Micronesia, in 2006. Like other oysters, these creatures survive by cementing themselves to one spot and filtering edible debris out of the water.