Oulactis magna

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'''''Oulactis magna''''', commonly known as the '''giant shore anemone''' or '''camouflaged anemone''', and by its Māori name '''kōtore tino nui''', is a common [[sea anemone]] found in New Zealand. <ref name=":0"></ref>

It is usually found in the mid to low tidal zone of exposed beaches living in tidal pools or between rocks where there is sand. Its body is usually encrusted in sand with only its tentacles exposed. It sometimes attaches pieces of shell and other debris to its stalk, a strategy that is thought to reduce erosion.<ref></ref><ref name=":1" />

The giant shore anemone has no known predators but is parasitised by the gastropod ''Epitonium'' (''Hyaloscala'') ''jukesianum,'' which uses its modified [[radula]] to pierce the anemone and suck out bodily fluids<ref name=":1" />.

== Description ==
This large anemone has a diameter of between 10 and 12 centimetres.<ref name=":1">Liquid error: wrong number of arguments (1 for 2)</ref>

It is best known for its vibrant colours and its central disc area can be green, pink, blue, or brown.<ref name=":0" /> Its tentacles are usually a different colour to the central disc and can be blue, mauve, orange or white.<ref name=":0" />

When underwater it extends up to 190 short blunt tentacles. These have perforated tips that resemble warts and eject fine streams of water when the animal is stimulated.<ref name=":2">Liquid error: wrong number of arguments (1 for 2)</ref> Tentacles are arranged in four or more whorls which are all of the same length. <ref name=":2" />

== Diet ==
Giant shore anemones feed on shrimp, small fish and small crabs, which they capture using stinging cells on their tentacles to paralyse prey. Once caught, they will suck prey into their central cavity to be broken down by digestive enzymes. Shells and other items that are indigestible will be expelled back through the central opening.

== References ==

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