An annulus animal bed capable of increasing the amount of food-derived organic matter to be processed by an annelid, or collecting annulus feces separated from soil. provide. An annulus animal habitat HB provides an annulus environment for annelids. The annelid habitat HB includes a plurality of sponge pieces and a sponge layer 16 in which the plurality of sponge pieces have gaps between the sponge pieces. [Selection] Figure 3
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