The tentacles are long, slender and tapering, arranged in six whorls round the central mouth on the oral disk.

[3] Anemonia sulcata has a symbiotic relationship with zooxanthellae, which inhabit the tissues and provide energy for the sea anemone.

There are no gonads, and the germ cells develop inside the mesenteries and break through the epithelium to enter the body cavity and thence move into the water column.

Specifically, toxin ll (ATX ll) derived from the Anemonia sulcata was used in rabbit's myocytes to determine whether they induced the late sodium current causing overloading of sodium ions and consequently calcium ions inside the cell via reverse Na+/Ca2+ exchanger current.

These toxins induce augmentations in diastolic Ca2+ concentration, calcium transient amplitude, and myocyte shortening therefore increasing serious cardiac failure and cell apoptosis.

This toxin has been shown to be an activator of G protein-coupled inwardly-rectifying potassium (GIRK) channels 1/2, involved in the regulation of cellular excitability.