The speckled anemone — Oulactis muscosa (Drayton in Dana, 1846), is found throughout New Zealand, but also found in southern Australia, Chile, and there’s also a record from China, which maybe dubious. They are ofter found low-tidal rock pools and between rocks in sand.
Is a medium-large anemone (~60 mm across). The oral disc is usually a brick-red colour (but can be orange) and the tentacles are speckled and striped.
The giant sand anemone, but speckled anemones are a bit smaller. The oral disc (the round bit looking down at the anemone) is usually a brick red (or orange) colour in the speckled anemone, but it can be several different colours in the giant shore anemone. Speckled anemone’s tentacles are speckled and striped (hence the name). The giant shore anemone seldom has speckled and striped tentacles. Speckled anemones have oddly bent, almost crinkly tentacles and this seems to be a consistent diagnostic feature, especially when distinguishing them from giant sand anemones.
Colour is usually an unreliable discriminator when it comes to telling one species from another. In the past many alleged species have turned out to be just colour forms of the same thing.
Speckled anemones are can be found in same sorts of places as the giant shore anemone (low tidal rock pools), However, they are more commonly found in areas with a bit more shelter. Like the giant shore anemone, they also attach pieces of shell to their stalks.