Why Did My Pulse Corals Stop Pulsing?

Pulse corals (e.g., Xenia and Heteroxenia spp.) are among the more enigmatic sessile invertebrates. Many hobbyists and non-hobbyists alike find their rhythmic, hypnotic pulsing behavior fascinating and relaxing to observe, but precisely why they pulse the way they do has long been a source of befuddlement. We know the pulsing isn’t related to prey capture … [Read More]