Thomas Marent / Harlequin Poison Dart Frog (Dendrobates histrionicus) on bromeliad, Cauca, Colombia

Fred Bavendam / Stony Coral (Acropora sp) colony releasing egg-sperm bundles during the mass coral spawning each March at Ningaloo Reef, Western Australia

Fred Bavendam / Staghorn Coral (Acropora cervicornis) colony releasing egg-sperm bundles during the mass coral spawning each March at Ningaloo Reef, Western Australia

Fred Bavendam / Stony Coral (Acropora sp) colony releasing egg-sperm bundles during the annual mass coral spawning on the Great Barrier Reef, Queensland, Australia

D. Parer & E. Parer-Cook / Stony Coral (Acropora sp) spawning, Great Barrier Reef, Queensland, Australia

Fred Bavendam / Staghorn Coral (Acropora robusta) and several species of small Damselfish (Chromis sp), Great Barrier Reef, Australia

Norbert Wu / Staghorn Coral spawning, coral colonies release eggs and sperm one night a year after the late spring's full moon, Great Barrier Reef

Norbert Wu / Staghorn Coral spawning occurs on consecutive evenings starting five days after the late spring's full moon, Great Barrier Reef

Fred Bavendam / Stony Coral (Acropora sp) colony releasing egg-sperm bundles during the mass coral spawning each March at Ningaloo Reef, Western Australia