Appearance
As the name burrowing anemone suggests, the column of this animal is usually buried to a greater or lesser extent. In some individuals, the column may be completely buried, and only the oral disk and tentacles are visible. The buried portion of the column is pink or white, while the part above the substrate, if any, is green or brown. Including the buried portion, the column may reach 25 centimetres (9.8 in) in height. It may be up to 10 centimetres (3.9 in) in diameter. The upper third of the column is covered in longitudinal rows of rounded wart-like tubercules. They are sparse on the middle third, and usually absent on the lower third of the column.The tentacles are slim and tapering. They are about half the width of the oral disk in length. They and the oral disk vary in color between individuals and can be green, brown, black, pink or orange. The tentacles are often banded in white. There are rarely more than five rows of tentacles circling the oral disk. They have special fighting tentacles, acrorhagi, to attack other anemones in too close proximity. When not inflated for an attack, these are inconspicuous. They appear as a single row of round, white bumps, underneath the outer row of tentacles.
Burrowing anemones are often solitary on the open coast, and are found living closer together in estuaries.
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