Big Brother

Big Brother is a lighthouse island the size of a few football pitches, alone in open sea, and every meter of its perimeter is a wall dive. The southern plateau collects grey reef sharks and passing schools of trevally; the northern end, where the Numidia's wreckage cascades, funnels current and everything that rides it. Thresher sharks come shallow at dawn along the thermocline, silky and oceanic whitetip sharks stack under moored boats in the fall, and hammerheads ghost the blue in early summer. Between shark appointments, the walls themselves are among Egypt's most luxuriant - soft coral, black coral, gorgonians in tiers. Weather sets the terms out here: on a rough week the island is simply unreachable, which is part of why it stays so good.

اللحظة التي جئت من أجلها: Dawn thresher encounters; fall oceanic whitetips beneath the boats; wall growth at its most extravagant.

التضاريس: An offshore island's fringing walls dropping into deep water, with sloping plateaus at the north and south ends

التيار: Current wraps the island and splits at the corners; plans hinge on which plateau is workable.

نقطة الدخول: Zodiac drops along the walls with live pickups; moorings are limited and conditions dictate the plan daily.

المخاطر: Strong current and blue-water phases; bold sharks near the surface; remoteness measured in hours from help.

التصاريح والقواعد: Marine-park fees; operators typically require Advanced Open Water and a logged-dive minimum.

الحفاظ على البيئة البحرية: Marine-park island with landing restrictions; conduct rules for shark encounters tightened after incidents in 2018.

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.