Common name: seagrass

General information

Halophila ovalis, commonly known as Paddle Weed, Spoon Grass, or Dugong Grass, is a species of seagrass that is widely distributed in the Indo-Pacific region. It is a small, fast-growing plant with oval-shaped leaves and a distinctive rhizome system that helps stabilize the substrate. This seagrass is an important ecological species, providing habitat and food for a variety of marine life, including the endangered dugong, which feeds on its leaves.

Care

In the aquarium, Halophila ovalis requires a sandy substrate to anchor its rhizomes. It thrives under moderate to high lighting conditions and benefits from the addition of micronutrients and iron supplements to promote growth. Regular pruning may be necessary to maintain its shape and prevent it from overshadowing other plants or corals.

Symbiosis

Halophila ovalis plays a crucial role in the marine ecosystem by offering shelter and nourishment to a wide array of organisms. It serves as a nursery ground for juvenile fish and invertebrates. Additionally, it acts as a feeding ground for herbivorous species, including the dugong and various species of sea turtles.

Habitat

This seagrass is found in a range of marine environments from shallow lagoons to deeper waters, typically up to 30 meters deep. It is tolerant of a range of salinities and can be found in both clear and turbid waters. Its presence is indicative of a healthy marine ecosystem and it is often used as a bioindicator for environmental monitoring.