The Yellow Nudibranch of Dumaguete: Gymnodoris subflava
In the crystal-clear waters off Dumaguete, Philippines, a striking yellow nudibranch glows against coral and sand. Gymnodoris subflava captivates divers and photographers alike — a vivid emblem of the Philippines’ extraordinary reef biodiversity.
A Bright Yellow Carnivore
This small shell-less marine gastropod reaches roughly 2.5 cm in length. Its body is so intensely yellow that internal organs are visible through its flanks. Despite its delicate appearance, Gymnodoris subflava is an active predator — feeding on other nudibranchs and their egg masses.
Diving Dumaguete: A Nudibranch Hotspot
Encounters like this are part of what makes Dumaguete a globally recognized destination for nudibranch discovery. Marine biologists and dive enthusiasts travel from around the world to explore its diverse reef habitats. For underwater photographers, finding Gymnodoris subflava in the wild is nothing short of capturing pure underwater magic — and a testament to the health and richness of the Philippines’ coral ecosystems.
Share Your Thoughts Below