Chicken Liver Sponge: Harbor Pollution's Enemy

Sea sponges are emerging as powerful allies in the fight against marine pollution, particularly in harbors. Recent research in Spain's Marina Palamós found that the chicken liver sponge (Chondrosia reniformis) not only survived but thrived in heavily polluted waters where other species failed. This discovery suggests a promising biological solution for renaturalizing some of the world's most disturbed marine ecosystems.

Over a 15-month period, scientists transplanted five common Spanish sponge species into the harbor. While red encrusting, leather, and stinker sponges all succumbed to the harsh conditions, nearly 92% of the chicken liver sponges survived and some even reproduced. This resilience underscores their potential for bioremediation, offering an overlooked natural toolkit to address environmental challenges.

Experts emphasize that sponges, despite their overlooked status compared to corals, provide significant ecosystem services. Their ability to filter vast amounts of water, cycle nutrients, and enhance biodiversity makes them ideal candidates for habitat recovery. Further research is planned to explore combinations of sponges with other filter feeders like oysters, expanding the scope of potential cleanup strategies.