How would you ask "Is it big?"
"Rōvor issa?" would be singular, but I'm confused about the use of adjectives without any nouns. Why would we assume "they" to be aquatic? Would this only happen in a specific context when it's implicit? Hmmm
Rōvra issa?
Wouldn't make grammatical sense as 'rōvra' is plural and 'issa' is singular.
Does HV always put an undefined referent in the aquatic?