Questions & Answers about Molte specie vivono nel mare.
It is plural here, but this can be confusing because specie is one of those Italian nouns that often has the same form in the singular and the plural.
So:
- una specie = one species
- due specie = two species
You often tell whether it is singular or plural from the article, adjective, or verb around it:
- una specie vive... = singular
- molte specie vivono... = plural
Vivono is the 3rd person plural present tense of vivere (to live).
Conjugation of vivere in the present:
- io vivo = I live
- tu vivi = you live
- lui/lei vive = he/she lives
- noi viviamo = we live
- voi vivete = you all live
- loro vivono = they live
So molte specie vivono means many species live.