Bolsa Pastor urchin pods serve dual purposes in bioactive enclosures: they create secure microhabitats for isopods and springtails while simultaneously enriching substrate as they naturally decompose and release nutrients. The porous structure encourages foraging and exploratory behaviors essential to captive wellness. Select pods feature larger openings, making them ideal shelters for small reptiles and amphibians including dart frogs and diminutive gecko species. A functional addition to any bioactive setup prioritizing naturalistic environmental design.