It grows along stable sand dunes near, but not in, the ocean surf.

This halophyte requires saline water which it receives mostly in the form of sea spray, and cannot tolerate fresh water or prolonged dry conditions.

Its succulent tissues are adapted to isolate and store salt.

The mats are thick and provide shelter for a variety of small beach-dwelling animals.

Its habitat is located in heavily traveled beach areas, where it is disturbed by human activity.