Masked Pocupinefish at the Similan Islands



The masked porcupinefish is a quirky and memorable sight at the Similan Islands. Known for its large eyes and dark mask-like markings, it looks like a cartoon bandit of the reef. These fish are often seen alone, slowly cruising near coral reefs or hiding under ledges during the day.

Although they seem shy, they have a clever defense—when threatened, they inflate their bodies and raise their spines to ward off predators. Divers love spotting them, especially during night or early morning dives when they’re more active.

The Similan Islands’ warm, clear waters and healthy coral reefs provide the perfect habitat. Photographers enjoy getting close, as these fish usually don’t mind a bit of attention.

If you're exploring the reefs, keep an eye out for this adorable, masked creature. The masked porcupinefish adds charm and character to every dive, making your Similan Islands adventure even more unforgettable.

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