Kalpana Kalpana (Editor)

Beadlet anemone

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Kingdom  Animalia
Subclass  Hexacorallia
Family  Actiniidae
Scientific name  Actinia equina
Rank  Species
Phylum  Cnidaria
Order  Actiniaria
Genus  Actinia
Higher classification  Actinia
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Similar  Actinia, Snakelocks anemone, Actiniidae, Anemonia, Strawberry anemone

Actinia equina beadlet anemone aggressive behaviour


The beadlet anemone, Actinia equina, is a common sea anemone found on rocky shores around all coasts of the United Kingdom and Ireland. Its range extends to the rest of Western Europe and the Mediterranean Sea, and along the Atlantic coast of Africa as far south as South Africa.

Contents

Beadlet anemone MarLIN The Marine Life Information Network Beadlet anemone

Actinia equina can be found both in exposed and sheltered situations. It is highly adapted to the intertidal zone as it can tolerate both high temperatures and desiccation. The anemone may also be found in regions of variable salinity such as estuaries.

Beadlet anemone 7 beadlet anemone facts you need to know Discover Wildlife

Underwater, it displays up to 192 tentacles, arranged in six circles. Out of water, the tentacles retract and the anemone resembles a blob of red, brown, green or orange jelly, up to about 5 centimetres (2.0 in) across. It has bright blue beads (known as acrorhagi) located just beneath the tentacles, organised as an external ring containing stinging cells located at the top of the column that it uses to fight over territory. The acrorhagi contains the cnidocysts which themselves contain the nematocysts. There is some evidence that the various colour forms may in fact be different species.

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Actinia equina is similar in form to the Waratah anemone (Actinia tenebrosa) of Australia and New Zealand. It is also similar in form to the strawberry anemone (Actinia fragacea) but is a uniform colour and is typically rather smaller.

Beadlet anemone MarLIN The Marine Life Information Network Beadlet anemone

Actinia equina is viviparous, with up to one hundred embryos developing inside the body cavity before being ejected into the open water as juveniles.

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Beadlet anemone feeding by vassos


Beadlet anemone Carol39s Cornwall Sea Anemones

References

Beadlet anemone Wikipedia