About Seagrass

Seagrasses are one of the only flowering plants, or angiosperms, that can grow in a marine environment. These plants support a diversity of life and can form extensive beds in shallow, protected, estuarine, or other nearshore environments. Fishes, invertebrates, algae, and epiphytes(plants that grow directly other plants) occur within seagrass habitat.

Two common seagrasses are eelgrass (genus Zostera) and surfgrass (genus Phyllospadix). Eelgrass grows primarily in subtidal habitat with low to moderate current exposure. In contrast, surfgrass grows on rocks in the intertidal and shallow subtidal zones of more wave-exposed environments. They are the only flowering plant that can grow on rocks. Both seagrasses thrive in cooler temperatures. Sunlight, for photosynthesis, is the most important parameter for seagrasses, which explains why the plants are most abundant in shallow nearshore environments.