A sea sponge on a thin stalk, roughly shaped like a gourd. The sponge's surface is covered in finger-like projections. A crab-eater seal's molar is directly behind the sponge.

Antarctic gourd sponge, Chondrocladia antarctica, with a crab-eater seal's tooth for size comparison
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Three stalked sea sponges in front of an underwater wall. The two larger individuals have tulip flower-shaped bodies covered in small grooves: their portion of the wall is covered in a dotted texture. The shortest individual has a catkin-shaped body.

The only extant siphoniid sponge (I think), Jerea pyriformis, as compared with a bath sponge, Spongia officinalis.
#sciart #porifera #demospongae #invertebrateart #jerea #spongia