Prorocentrum rostratum is a species of Prorocentraceae in the family Prorocentraceae. They are native to Espirito Santo, Bahia, Rio Grande Do Sul, Rio De Janeiro, and Santa Catarina.
Definition: Living in the fluid medium (water or air) but unable to maintain their position or distribution independently of the movement of the water/air mass (adapted from Lincoln et al., 1998).