F. quadrangularis’s appearance is often described as feather-like. More specifically, they look like a quill sticking in the seabed. They are anchored by a peduncle as its base and they have a calcareous axial … See more

The tall sea pen can be found globally. They are most commonly found in sea lochs and open waters of the northwest coast of Scotland, mainly found with a depth below 20m to … See more

Sea pens are home to many secondary polyps that are either specialized in either feeding or water intake. They are associated with the See more

F. quadrangularis is considered to be nationally rare and are a high conservation significance specie.
In the UK See more

The tall sea pan is dioecious, which means that they have the male and females reproductive organs in separate individuals. The females will develop one oocyte each time … See more

The greatest threat to the survival of F. quadrangularis colonies is demersal fishing activities. This species has very limited distribution … See more