This is a female red egg crab (Atergatis integerrimus) sending zoea (planktonic-stage larval crabs) into the ocean. These crabs often launch their juveniles from within the safety of coral or rocks. This one was perched atop Pavona decussata coral for a few minutes before dropping into the crevice between folds of coral to continue broadcasting progeny. Photographed in Kagoshima Prefecture, Japan.