In many species, body size and shape is highly variable.
Sponges can reproduce sexually or asexually.
Sponges are suspension feeders, creating currents that draw in plankton and organic detritus from the water column. The three species listed here occur in the SE Bering Sea, although they may not be the most common species or the most commonly taken in the NMFS trawl survey. Large, thick-walled colony is highly variable in shape. Not attached to substrate. This sponge grows over a snail shell which it eventually dissolves.