[1] The Enthemonae is any member of the invertebrate suborder characterised by soft bodied, marine animals that look like flowers which primarily attach to hard or rigid surfaces, such as coral or rocks.

An Enthemonae is a suborder of sea anemone of the order Actiniaria, which includes the overall majority of the actiniarians, which belong to the former groups of Protantheae, Ptychodacteae, and Nynantheae.

The differential feature between the 2 suborders of sea anemone; Enthemonae and Anenthemonae is that they are primarily characterised by having basilar muscles, mesoglea marginal sphincter and they lack acontia and arotinoids.

These superfamilies which are predominately found in the Southern Ocean and therefore brood externally as well as having a combination of morphological features including 12 mesenteries and an oral disc similar to glandular sacs.

Superfamilies and families in the suborder Enthemonae include:[3] Sea Anemones are solitary hexacoral polyps which in contrast to the majority of colonial forms have no skeleton.

They are diploblastic animals, with a body that displays a wall consisting of 2 layers; the epidermis and the gastrodermis, separated by an extracellular mesoglea which contains many amebocytes.

[1] Enthemonae produce venom dependent on the superfamily with vast molecular diversity which are classified according to pharmacological activity and amino acid sequence.

These toxins can be released in greater quantities due to the larger capacity of the gland in comparison to the nematocytes, which allows for the opportunity for the reach of the venom to extend.

The mouth of the anemone can stretch as well in order to help capture their pray and ingest larger animals such as crabs, molluscs and even some species of small fish.

[10] Some Enthemonae also are considered to be opportunistic and omnivorous feeders that feed a large extent of their diet through organic detritus, which is caught with the acid of their mucus secretion.

[5] It is part of a highly diverse order that successfully occupies marine habitats across all depths of the ocean, ranging from the tidal zone to more than 33,000 feet.

The greatest range of Enthemonae are found in the warmer tropical areas of the ocean but there is still a number of superfamilies that inhabit the colder and deeper waters.

The process involves separation of small, irregularly shaped fragments from the edge of the disk of the sessile or the slowly moving sea anemone.

The opening in the basal part of the separated tentacle is closed by a ‘tissue plug’, which then falls off with the onset of active cell proliferation and subsequent formation of the body of a new anemone.

[15] The immense ecological success of sea anemones, such as Enthemonae is due to the symbiotic relations between the hosts and the unicellular green algae.

[17] The type of symbiotic relationship they develop is known as commensalism as the hermit crab is protected from predators from the venom inside the tentacles of the Enthemonae.