Syringodium isoetifolium, commonly known as noodle seagrass,[3] is a species of flowering plant in the family Cymodoceaceae, growing underwater in marine habitats.

It forms seagrass meadows in shallow sandy or muddy locations in the Indian and Pacific Oceans.

The shoots are encased in a sheath at the base and each consists of two or three hollow, tubular leaves with smooth pointed tips.

[5] Marine fouling causes much economic loss from organisms growing on the hulls of ships, pipelines and other submerged structures.

[6] The extract was non-toxic to brine shrimps and showed promise as an agent to replace the toxic chemicals that have been used historically.