Long round segmented multibranched stems. Leaves at end of branches in groups of 6-8 overlapping at base and arising in an alternate pattern from the stem. Leaf blades are flat and long, with two "teeth" at the outermost upper edges of the concave leaf tip. Rhizome (roots) is creeping and thickened (lignified). Dark green leaves with pale brown stems. Up to 80 cm long (plant).
Seagrasses are flowering plants, part of the monocot group which includes land grasses such as wheat. Seedlings of this species have combs, similar in appearance to the shuttlecock used in badminton, at the base known as "grappling apparatus". These combs allow them to attach to substrates such as sand, algal turf and coralline algae. The seadragon, Phyllopteryx taeniolatus is sometimes found in association with Amphibolis antartica beds in Victoria.
Sandy muddy bottoms, subtidal rocky reefs and tidal pools, with moderate-strong water movement, to depth of 23 m.
Photosynthetic - sunlight
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed