Heteractis malu (Haddon & Shackleton 1893), the Delicate Sea Anemone. Narrow, buried column of pale cream, yellow, orange to red color, sometimes with some yellow or orange splotching. Upper part with adhesive verrucae in rows. Sparse tentacles of stubby appearance, variable length, usually magenta tipped, with radial markings. Found in sediment in shallow, still water. Here in Australia with a Clarkii Clownfish and at a wholesalers.
Heteractis crispa (Ehrenberg 1834), the Leathery or Sebae Sea Anemone. Family Stichodactylidae. Often mis-sold/identified in the trade as H. ritteri and the commonest species in the market as the "Sebae Anenome". Has numerous long, tapering tentacles that end in points. Column gray in color. A close-up in Fiji, the second in the Cook Islands, third in Fiji. See more typical aquarium specimen above in the article header.
That help? If not, look around their site. Sometimes people post ID pics in the id FAQ's and they describe how they are different in more detail.
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