Het Leven der Dieren, Deel 3, Hoofdstuk 5: De Spinachtigen

In this lively scientific journey, listeners are taken into the hidden world of the curious “worm‑lunged” creatures that bridge the gap between annelids and true arthropods. The narrator unpacks the anatomy of the velvet‑like Peripatus, highlighting their trunk of numerous segments, paired clawed feet and the remarkable tracheal openings that link them to the air. Along the way, the tale of their tropical habitats and live‑bearing reproduction brings these rare animals vividly to life.

The focus then widens to the great tapestry of arachnids, whose bodies split into a fused cephalothorax and an often unsegmented abdomen. Listeners learn how their solitary eyes, cheliceral “jaw‑like” appendages, and diverse breathing tricks—from book‑lung plates to simple skin diffusion—set each order apart. With over four thousand species outlined, the description paints a clear picture of their evolution, diversity and the subtle ways they differ from their crustacean cousins.