• Norwegian: trehydroide


Hydroid stage: The colonies can grow to a height of 25 cm. They are heavily branched. The main stem is brown and significantly thicker then the branches. The branch diameter decreases evenly with the distance from the stem. The hydranths are colored pink and have 20-24 tentacles. It may be confused with E. ramosum. The branches of the E. ramosum are tending more upwards, giving the colony a more slender and upright profile.

Medusa stage: No information.


It grows on hard substrate on depths between 5 and 100 meters.


This hydroid is a cosmopolitan that can be found virtually anywhere in the Atlantic Ocean.