There's a Lake Under the Ocean With Its Own Shoreline
There's a lake under the ocean with its own shoreline, waves, and beach.
Fact-checked · 1 verified sourceReviewed by the CurioVault curator · 8 October 2026 · Last updated 7 October 2026 · Editorial standards
There's a lake under the ocean with its own shoreline, waves, and beach.
In the Gulf of Mexico, 3,300 feet down, sits the Jacuzzi of Despair - a 100-foot-wide brine pool that looks like a lake inside the sea. It has its own shoreline where seawater meets dense salty brine, its own surface that ripples when creatures swim over it, and even its own underwater beach.
It forms because salt from deep underground dissolves and seeps out, creating water 3 to 5 times saltier than the ocean. That extra salt makes it so dense it doesn't mix - it pools in depressions like oil. At 19°C it's warm, but so salty and devoid of oxygen that anything that wanders in is pickled and preserved.
NOAA discovered these in the 1980s. ROVs have filmed mussels lining the shore like tide pools, and dead crabs and fish preserved on its banks. It's a lake that drowns you if you're a fish, sitting at the bottom of the ocean, with waves made of salt.
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