Rempart Serpent

Rempart Serpent looks like nothing from above (a low, snaking ridge of dark rock on plain sand) and holds one of the Indian Ocean's strangest fish censuses. Scorpionfish carpet the stone in layered dozens, stonefish sulk in the depressions, lionfish of several species drift over the top, and morays thread the honeycomb below. Octopus and shrimp fill the gaps. Nothing here is fast and nothing is far; the skill is spotting the animal before your hand or knee finds it, which is why guides insist on hover-only diving. Photographers with macro lenses treat the ridge as a full-tank studio.

اللحظة التي جئت من أجلها: Extraordinary density of scorpionfish, stonefish, and morays on one small ridge

التضاريس: Serpentine rock ridge winding across sand, little coral, endless holes

التيار: A low ridge on open sand; conditions are usually calm, visibility modest.

المخاطر: Venomous species everywhere and a 22-meter working depth that eats no-deco time.

الحفاظ على البيئة البحرية: Never settle on the ridge: nearly every surface is a venomous fish or its home.

نيتروكس: يستحق الأمر هنا: الملفات الشخصية تقع في النطاق الذي يُمدّد فيه الهواء المدعّم (نيتروكس) وقت الغوص دون توقف تمديدًا ملموسًا، مع التدريب اللازم لاستخدامه.