Talk:Ocean

Subsurface water?

Seems to me that to ignore recent findings suggesting that most water of the Earth is found in the mantle as hydroxyl ions, and claim that the oceans contain 97% (why not 96.5?) of the Earth's water is highly inaccurate. Why not qualify the claim? The oceans contain an estimated 96.5% of all the water in and above the Earth's crust. Also, it is estimated that without greenhouse warming, the surface of the Earth would average -18C. That is, "the reason" we have liquid water (and life) on Earth is NOT because Earth is in the Sun's "habitable zone" per se, but because of carbon dioxide (among the other greenhouse gases) in the atmosphere. And the habitable zone concept is, by the way, in declining use and has been shown to be a poor predictor of the existence of liquid water. I suggest WP articles using it need to be updated. What I'm saying is: it is discredited, in large measure.~2025-31506-44 (talk) 10:04, 29 November 2025 (UTC)

There's no such thing as "hydroxyl ions" as "hydroxyl" refers to the electrically neutral OH radical. Neither hydroxyl radicals nor hydroxide ions (OH−), if that's what you meant, are water. Can you supply sources for your other claims? Largoplazo (talk) 14:22, 29 November 2025 (UTC)