The Qur’an describes the vast seas and the hidden depths (‘two seas’, unseen layers). Modern oceanography finds that large portions of the ocean lie in perpetual darkness, beyond the sunlit photic zone, where unique life and ecosystems exist, light penetration is minimal, and bioluminescence replaces sunlight. Scientific studies on the dark ocean illustrate how the deep sea is a hidden realm with its own rules, aligning with the Quranic references to the unseen depths. This harmony invites reflection on creation’s layers and the scale of Earth’s water bodies.
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari