David Julian: Urechis caupo research: MPEG files of Urechis caupo (Echiura) feeding behavior and summary of corresponding paper.
Introduction to the Echiura: Introduction to this small phylum, closely related to the Annelids, from UCMP Berkeley.
Life with Toxic Sulfide: A talk by Alissa Arp about Hydrothermal Vents, Deep Sea Vents, Seeps and Estuarine Mud--Life with Toxic Sulfide - Taxa included are Pogonophora and Echiura
Minor Invertebrate Phyla - Echiura: Echiurans are marine worms that burrow into mud or sand or live in empty shells.