Gram-staining-positive cocci, about 1.0–1.2 mm in diameter.
Oxidase- and catalase-positive; an oxidative metabolism
is shown. Good growth occurs after 48 h on tryptone
soy agar and marine agar 2218 at 28 uC. No growth occurs
on MacConkey agar at 28 uC. No growth occurs at 2 or
45 uC. Growth occurs with 1–25% (w/v) NaCl [optimum 8–
10% (w/v) NaCl]