Tripos lunula is a species of Dinophyceae in the family Ceratiaceae. They are native to Amapá, Rio De Janeiro, Espirito Santo, Rio Grande Do Norte, Ceará, Pernambuco, and SãO Paulo.
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).