Table 6.

Antiviral activity of seagrasses.

Species	Extract/Active Compound	Virus	Inhibition	References
P. oceanica	MeOH/H2O 7:3 (balls extract)	H5N1	45% inhibition at 100 μg/mL	[25]
T. ciliatum	Methanolic extract	Hepatitis A (HAV) and herpes simplex (HSV-1)	100% inhibition at 20 μg/mL	[17]
T. hemprichii	Methanolic extract	HCV	50% inhibition at 23 μg/mL	[109]
Zosteraceae family	Polyphenol complex	Tick-borne encephalitis (TBE)	Suppressed accumulation of the pathogen in the cell culture at 100 μg/mL concentration.	[113]