reported that ethanol extract of the seaweed
Chaetomorpha antennina was found to be effective against the shrimp
pathogen Vibro parahaemolyticus. The different concentrations of ethanol
extract from50 μl, 100 μl, 150 μl, 200 μl showed zone of inhibition, 17 mm,
21 mm, 28 mm, and 36 mm respectively.