Identify the organism based on the following features.
A. These organisms are mostly marine and photosynthetic
B. Cell wall has stiff cellulose plates on their outer surface
C. Some of them undergo rapid multiplication that make the sea appear red (red tide)
Dinoflagellates are mostly marine and photosynthetic. The cell wall has stiff cellulose plates on the outer surface. Very often, red dinoflagellates (Example: Gonyaulax) undergo such rapid multiplication that they make the sea appear red (red tides).