That was actually caused by a school of parrot fish that had started eating it, though luckily, they lost interest before killing it.
و السبب فيه هو مجموعة من سمك الببغاء التي بدأت في الأكل منه و لكنهم و لحسن الحظ فقدوا شهينهم قبل أن يقضوا عليه