Definitions for "Eelgrass"
A plant (Zostera marina), with very long and narrow leaves, growing abundantly in shallow bays along the North Atlantic coast.
a rooted underwater grass type plant
( Zostera marina) A marine flowering plant that grows subtidally in sand and mud. In Buzzards bay, eelgrass is widespread and grows to depths of 20 feet in clear waters. Eelgrass beds are an important habitat and nursery for fish, shellfish, and waterfowl.