Shoal grass Shoal grass (Halodule

wrigh i Halodulewrigh i)

Shoal grass is characterized by having fla ened, long and thin leaves (thinner than turtle grass), measuring between 4 and 10 cm (approx. between 1.6 to 4 inches) in length and between 2 and 5 mm (0.08 and 0.20 inches) in width. They present two or three indenta ons on the upper p of each leaf (see the inset in figure 15). The leaves are grouped in different nodules along the rhizome. Each nodule produces 2 to 5 roots that grow downwards, and a group of leaves growing upwards. The roots are not ramified. They grow on mud or sand at depths greater than 5 m (approx. 16 feet). They can be found in monospecific meadows or mixed with other grasses. (Figure 14).