BULLETIN OF MARINE SCIENCE. 00(0):000–000. 0000 doi:10.5343/ 193 Bulletn of Marine Science © 2011 Rosenstel School of Marine and Atmospheric Science of the University of Miami Bulletin of Marine Science © 2020 Rosenstiel School of Marine & Atmospheric Science of the University of Miami Portraits of Marine Science Bull Mar Sci. 96(1):193–194. 2020 https://doi.org/10.5343/bms.2019.0067 Multispecifc synchronous coral spawning on Pulau Bidong, Malaysia, South China Sea Chun Hong Tan 1, 2 * , Che Din Mohd Safuan 2 , Izwandy Idris 3 , Mohammad Rafq Hakimi Mohd Noor 1 , Muhammad’ Arif Samshuri 1 , Nurzahirah Kamarrudin 1 , Puteri Nurshazmimi Zaidi 1 , Siti NurTahirah Jaafar 1, 2 , Andrew H. Baird 4 1 Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia. 2 Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia. 3 South China Sea Repository & Reference Center, Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia. 4 Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia. * Corresponding author email: <tanchunhong@umt.edu.my>. A C B Multispecifc synchronous spawning appears to be a feature of all speciose coral as- semblages (Guest et al. 2005) having now been reported from at least 25 locations in the Indo-Pacifc (Baird et al. 2015). Nonetheless, there are many aspects of coral spawning that remain poorly understood, and many regions for which there is little data. In par- ticular, there are few records of coral spawning from the South China Sea. Information on the timing of coral spawning is also important for the efective management of human activities such as coastal development (Baird et al. 2011). Here, we document multispe- cifc synchronous spawning of scleractinian corals on Pulau Bidong (5°37´N, 103°03´E), an inshore island on the east coast of Peninsular Malaysia. We frst conducted surveys to determine the reproductive condition of Acropora colonies following Baird et al. (2002)