| Like
stony corals, sea fans and other gorgonians are susceptible to disease
and predation. Black-Band Disease and Red-Band
Disease, two diseases commonly observed in stony corals also affects
gorgonians. Other conditions observed on gorgonians include a fungal
disease, aspergillosis, Skeleton
Anomalies, and various signs of Predation
including that caused by molluscs and worms. |

Flamingoe tongue snails (Cyphoma gibbosum) feeding on a branching
gorgonian and a sea fan. The feeding scar is indicated
|

In addition to hard-shelled gastropods, nudibranchs also prey on
gorgonian tissue, as shown here.
|
Sea
fan with tumors
|

Sea fan with
a fungal disease termed aspergillosis
|

Sea fan affected by red-band disease and being overgrwon by
Millepora fire coral.
|
Sea fan being overgrown by fire coral
|

Black-band disease on a sea fan, Gorgonia ventalina
|
|