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TIL Clownfish are covered in a layer of mucus which acts as a protective shield from the harmful tentacles of anemones, giving them immunity to stinging tentacles

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ADynw TIL that there is only one genus known to science in which the female has a well-defined organ that can be described as a penis. Neotrogla is a genus of barklice that consists of 4 species, all native to Brazil. Via penises, females drain males of seminal fluid when they are too young to reproduce.
xVJYk TIL there are many people living without running water in the USA
gWd9 TIL The man who invented Tang also invented Cool Whip, Pop Rocks, quick setting Jello
kGJm TIL Medieval blue dye was made by soaking the leaves of the woad plant in human urine. Urine from men who had been drinking a great deal of alcohol was said to improve the color.
nWJOb TIL German actor Klaus Kinski was so difficult to work with filming the 1986 movie "Crawlspace" the director later made a short documentary called "Please Kill Mr. Kinski" about the whole mess, claiming Kinski received death threats from the crew and producers over his antics on set.