It's absolutely pitch black, because photons cannot reach the average depth of the ocean, which is 12,000 feet. In the Rift Valley, it's 9,000 feet.
Benar-benar gelap di sana karena foton tidak dapat mencapai kedalaman rata-rata samudera sekitar 12.000 kaki. Kedalaman lembah Rift sekitar 9.000 kaki.