Title text:
They're up there with coral islands, lightning, and caterpillars turning into butterflies.
Transcript:
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Source: https://xkcd.com/3135/
this post was submitted on 30 Aug 2025
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Huh. TIL that there are three common types of tidal cycles and which one you get depends on geography, location, ocean currents. https://beltoforion.de/en/tides/tidal_cycles.php
And yeah, dinural is apparently the most rare of the three. Wild.
Thanks. I didn't know either that there are places, where the sea level does not rise and fall twice a day.
I was reading Circe, by Madeline Miller, and on several pages some ancient Greeks wait for the tide to sail away, or watch the sea rising while waiting for Odysseus, and so on. Like, woman, did nobody notice at your publishing house?
Me, too, TIL!