Line Of Sight Name Gag
- Considering it - one word: how? Ryn hasn't learnt any human languages yet, so how could she read the word?
- She heard it, not read it. The cartoon character Ryn got her name from said "I am Ryn" which Ryn then repeated, causing people to assume that was her name.
- Given that neither the merfolk cares much for it (and drops fins everywhere) nor the military does much to uphold it (and is horribly incompetent) - how could the existence of mermaids be a secret for so long, even if they usually don't come out of the water? And how did the military came to know then after all?
- Can't answer all of it, but the fins were shown to dissolve quickly after being detached early in season one.