Anemone

Anemones are marine invertebrates that make a small appearance in How to Train Your Dragon (Franchise).

Description
Anemones are underwater animals of the order Actiniaria. Their name comes from a terrestrial flower. They are closely related to the Jellyfish, however the anemones do not have the medusa stage.

The anemones are mostly fixed on the surfaces beneath them but they can also move in situations that would be fatal to them.

The body of an anemone is called polyp. On the top of it are the tentacles and the mouth. The tentacles contain small cells with venom used for hunting as well as for defense.

Function
There is no function for the anemone in the franchise.

However, in real life they are kept by humans as ornamental decorations. Anemonia sulcata is eaten in some countries.

School of Dragons
The Anemone briefly appears in the quest Gross Cool Things in which Ruffnut and Tuffnut talk about some sea creatures including anemone.