Stupid names, like "Jellyfish". You'd expect one to look fish-shaped and be made of Jelly.
And also, "Portugese-Men-of-War." You'd expect them to look like men.
Actually, that name could be offensive to the Portugese. And to Men.
Henceforth, they should be called "West-Iberian-People-of-War."
Wait... does this all come under language?
*vanishes to Mordor in a puff*