Diversity that boggles our minds – polychaete worms

Photo: “A variety of marine worms”: plate from Das Meer by M.J. Schleiden (1804–1881). In 15 minutes of looking at the same rock I collected on the beach, I found more than 12 different species of polychaete worms. Some of them were swimmers; wriggling in the water column. Some of them had fans, others appendages…