[2] Suberites suberia was at one time thought to be a synonym but molecular analysis has shown that it is a distinct species.

Suberites farinaria is a similar but encrusting sponge but it is thought to be a juvenile form of S. ficus.

It is usually some shade of orange or red, especially in brightly lit places, but sometimes is greyish or brownish in dimmer locations.

[5] S. ficus is found growing on rocks from the lower shore down to a depth of two hundred metres and prefers locations with strong tidal flows.

The male and female gametes may not be released simultaneously and sperm may be drawn into the vascular system of another individual.

They can become active when a period of adverse conditions such as an excessive exposure to low temperatures comes to an end.

[1] In Cape Cod Bay, it forms part of the diet of the Atlantic bluefin tuna (Thunnus thynnus).