D2I1N1O1F4L1A1G2E1L1L1A1T1E1
19 points
DINOFLAGELLATE is validvalid
a kind of marine protozoan, one of the principal constituents of plankton
a kind of marine protozoan, one of the principal constituents of plankton
a kind of marine protozoan, one of the principal constituents of plankton
a kind of marine protozoan, one of the principal constituents of plankton