While doing some learning on this lovely morning, I discovered (why had I not researched this topic earlier in life?) that the sperm whale is so named because people used to believe that the massive quantities of of a white substance in their enormous* heads was sperm. (That's the first thing I learned.) Then I learned that the substance (actually spermaceti** oil) is found in two places within the head - the "spermaceti organ" or "case," and also an organ known, even to scientists, as the "junk."
I love learning.
COMPREHENSION EXERCISE
1. Please explain, in clear terms, drawing on some of the vocabulary in the article, what we learned today.
* 5 to 6 meters in males
** It translates to "whale sperm" or literally "sperm of the sea monster"; like the animal's name, this refers to the belief that the animals heads were full of sperm.