TAXONOMY
Kingdom:Animalia
Phylum: Cnidaria
Class: Anthozoa
Order: Actiniaria
Family: Actiniidae

Genus/species: Entacmaea quadricolor

GENERAL CHARACTERISTICS: The Bubbletip Sea Anemone has an adherent base which attaches to the shape of the substratum. At the top of the column is a flattened oral disc with an oval mouth in the middle. The oral disc and column are smooth and brown, green, or occasionally a fluorescent reddish-orange. Tentacles are up to 10 cm (4 inches) length, often but not always inflated and balloonlike at the tips. 

Length up to 40 cm (16 inches)

Bubble tip anemone5389669474_fb02a667dc_o

DISTRIBUTION/HABITAT: Found in the Indo-Pacific, usually in deep crevices with only the tentacles visible.

Bubble tip anemone16122486362_7ee3a9b81d_o

DIET IN THE WILD: E. quadricolor captures prey using cnidocytes on their tentacles which contain many “stinging organs” known as nematocysts (or cnidae). Larger individuals generally have larger nematocysts used when prey drifts or swims into the tentacles of the anemone to immobilised and transport to the mouth via tentacle contraction. They are microcarnivores of plankton, supplemented with nutrition from zooxanthellae algal symbionts.

REPRODUCTION: Bubbletip Sea Anemones are roadcast spawners releasing gametes directly into water.

CONSERVATION: IUCN Red List Not Evaluated

REMARKS: They are symbiotic with many species of anemonefishes, such as the common clownfish (Amphiprion ocellaris)

E. quadricolor has obligate photosynthetic zooxanthellae, brown algae, which live inside the anemone acting as a carbon and nitrogen source.

This anemone also exhibits biofluorescence.

References

California Academy of Sciences Steinhart Aquarium Color on the Reef 2017 AQA16

Ron’s flickr https://www.flickr.com/photos/cas_docents/31483022142/in/album-72157659465376212/

Ron’s Worldpress shortlink http://wp.me/p1DZ4b-1Kv

The University of Queensland

http://www.gbri.org.au/SpeciesList/Entacmaeaquadricolor%7CNicolaWood.aspx

SeaLifebase www.sealifebase.org/summary/Entacmaea-quadricolor.html

taxo4254.wikispaces.com/Entacmaea+quadricolor