Why 90_ of the Ocean Is Still a Complete Mystery _ Boring Science for Sleep

Boring Science · Sep 7, 2026 · 2h · transcript

Let the quiet vastness of the deep sea carry you into sleep. We have better maps of Mars than of Earth's ocean floor—in fact, humans have directly observed less than 0.001% of the deep seafloor, an area about the size of Rhode Island . The deep sea, beginning 200 meters down where sunlight vanishes, makes up over 90% of the ocean's volume . This quiet, dark world absorbs 90% of Earth's excess heat and 30% of our carbon dioxide, yet remains almost entirely unseen . A gentle reminder of how much mystery still lies beneath the waves