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Why aren’t the oceans getting saltier?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Mar 27, 2026 · Updated Apr 13, 2026

They are getting saltier. The reason we do not notice is that there is a very small percentage change even over millions of years. The dead sea is a very small body of water compared to the rest of the ocean and its relatively isolated compared to the most oceans/seas.

79
Words

1 min
Read Time

#193
of 500 in Nature

+11%
vs Category Avg

The Short Answer

They are getting saltier. The reason we do not notice is that there is a very small percentage change even over millions of years. The dead sea is a very small body of water compared to the rest of the ocean and its relatively isolated compared to the most oceans/seas. the dead see also would not of gotten that much saltier in recent times if it was not due to the sea being evaporated in human made basins.

Analysis

Key Concepts: Saltier, small, dead

This explanation focuses on saltier, small, dead and spans 79 words across 4 sentences. The depth is typical for Nature questions (category average: 71 words), striking a balance between accessibility and completeness.

What This Answer Covers

The explanation opens with: “They are getting saltier.” It then elaboratesultimately building toward a complete picture across 4 connected points.

How This Compares in Nature

Ranked #193 of 500 Nature questions by answer depth (top 39%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.

Frequently Asked Questions

Is there a simple explanation for why the oceans getting saltier?

They are getting saltier. The reason we do not notice is that there is a very small percentage change even over millions of years. The dead sea is a very small body of water compared to the rest of the ocean and its relatively isolated compared to…

How detailed is this explanation compared to similar Nature questions?

This is an above-average answer at 79 words, ranked #193 of 500 Nature questions by depth. The key concepts covered are saltier, small, dead.

What approach does this answer take to explain the oceans getting saltier?

The explanation uses root cause analysis across 79 words. It is categorized under Nature and addresses the question through 1 analytical lens.